sync

sync.doxy (113586B)

---

 # Doxyfile 1.9.1
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.
 #
 # All text after a double hash (##) is considered a comment and is placed in
 # front of the TAG it is preceding.
 #
 # All text after a single hash (#) is considered a comment and will be ignored.
 # The format is:
 # TAG = value [value, ...]
 # For lists, items can also be appended using:
 # TAG += value [value, ...]
 # Values that contain spaces should be placed between quotes (\" \").
 
 #---------------------------------------------------------------------------
 # Project related configuration options
 #---------------------------------------------------------------------------
 
 # This tag specifies the encoding used for all characters in the configuration
 # file that follow. The default is UTF-8 which is also the encoding used for all
 # text before the first occurrence of this tag. Doxygen uses libiconv (or the
 # iconv built into libc) for the transcoding. See
 # https://www.gnu.org/software/libiconv/ for the list of possible encodings.
 # The default value is: UTF-8.
 
 DOXYFILE_ENCODING      = UTF-8
 
 # The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
 # double-quotes, unless you are using Doxywizard) that should identify the
 # project for which the documentation is generated. This name is used in the
 # title of most generated pages and in a few other places.
 # The default value is: My Project.
 
 PROJECT_NAME           = "GNU Taler: Sync"
 
 # The PROJECT_NUMBER tag can be used to enter a project or revision number. This
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
 PROJECT_NUMBER         = 1.1.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
 # quick idea about the purpose of the project. Keep the description short.
 
 PROJECT_BRIEF          = Encrypted backup storage service with a REST API
 
 # With the PROJECT_LOGO tag one can specify a logo or an icon that is included
 # in the documentation. The maximum height of the logo should not exceed 55
 # pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
 # the logo to the output directory.
 
 PROJECT_LOGO           = logo.svg
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
 # into which the generated documentation will be written. If a relative path is
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
 OUTPUT_DIRECTORY       = .
 
 # If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and
 # will distribute the generated files over these directories. Enabling this
 # option can be useful when feeding doxygen a huge amount of source files, where
 # putting all generated files in the same directory would otherwise causes
 # performance problems for the file system.
 # The default value is: NO.
 
 CREATE_SUBDIRS         = YES
 
 # If the ALLOW_UNICODE_NAMES tag is set to YES, doxygen will allow non-ASCII
 # characters to appear in the names of generated files. If set to NO, non-ASCII
 # characters will be escaped, for example _xE3_x81_x84 will be used for Unicode
 # U+3044.
 # The default value is: NO.
 
 ALLOW_UNICODE_NAMES    = NO
 
 # The OUTPUT_LANGUAGE tag is used to specify the language in which all
 # documentation generated by doxygen is written. Doxygen will use this
 # information to generate all constant output in the proper language.
 # Possible values are: Afrikaans, Arabic, Armenian, Brazilian, Catalan, Chinese,
 # Chinese-Traditional, Croatian, Czech, Danish, Dutch, English (United States),
 # Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian,
 # Indonesian, Italian, Japanese, Japanese-en (Japanese with English messages),
 # Korean, Korean-en (Korean with English messages), Latvian, Lithuanian,
 # Macedonian, Norwegian, Persian (Farsi), Polish, Portuguese, Romanian, Russian,
 # Serbian, Serbian-Cyrillic, Slovak, Slovene, Spanish, Swedish, Turkish,
 # Ukrainian and Vietnamese.
 # The default value is: English.
 
 OUTPUT_LANGUAGE        = English
 
 # If the BRIEF_MEMBER_DESC tag is set to YES, doxygen will include brief member
 # descriptions after the members that are listed in the file and class
 # documentation (similar to Javadoc). Set to NO to disable this.
 # The default value is: YES.
 
 BRIEF_MEMBER_DESC      = YES
 
 # If the REPEAT_BRIEF tag is set to YES, doxygen will prepend the brief
 # description of a member or function before the detailed description
 #
 # Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
 # brief descriptions will be completely suppressed.
 # The default value is: YES.
 
 REPEAT_BRIEF           = YES
 
 # This tag implements a quasi-intelligent brief description abbreviator that is
 # used to form the text in various listings. Each string in this list, if found
 # as the leading text of the brief description, will be stripped from the text
 # and the result, after processing the whole list, is used as the annotated
 # text. Otherwise, the brief description is used as-is. If left blank, the
 # following values are used ($name is automatically replaced with the name of
 # the entity):The $name class, The $name widget, The $name file, is, provides,
 # specifies, contains, represents, a, an and the.
 
 ABBREVIATE_BRIEF       = "The $name class" \
                          "The $name widget" \
                          "The $name file" \
                          is \
                          provides \
                          specifies \
                          contains \
                          represents \
                          a \
                          an \
                          the
 
 # If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
 # doxygen will generate a detailed section even if there is only a brief
 # description.
 # The default value is: NO.
 
 ALWAYS_DETAILED_SEC    = NO
 
 # If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
 # inherited members of a class in the documentation of that class as if those
 # members were ordinary class members. Constructors, destructors and assignment
 # operators of the base classes will not be shown.
 # The default value is: NO.
 
 INLINE_INHERITED_MEMB  = NO
 
 # If the FULL_PATH_NAMES tag is set to YES, doxygen will prepend the full path
 # before files name in the file list and in the header files. If set to NO the
 # shortest path that makes the file name unique will be used
 # The default value is: YES.
 
 FULL_PATH_NAMES        = YES
 
 # The STRIP_FROM_PATH tag can be used to strip a user-defined part of the path.
 # Stripping is only done if one of the specified strings matches the left-hand
 # part of the path. The tag can be used to show relative paths in the file list.
 # If left blank the directory from which doxygen is run is used as the path to
 # strip.
 #
 # Note that you can specify absolute paths here, but also relative paths, which
 # will be relative from the directory where doxygen is started.
 # This tag requires that the tag FULL_PATH_NAMES is set to YES.
 
 STRIP_FROM_PATH        = ../..
 
 # The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
 # path mentioned in the documentation of a class, which tells the reader which
 # header file to include in order to use a class. If left blank only the name of
 # the header file containing the class definition is used. Otherwise one should
 # specify the list of include paths that are normally passed to the compiler
 # using the -I flag.
 
 STRIP_FROM_INC_PATH    = ../../src/include \
                          src/include \
                          include
 
 # If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but
 # less readable) file names. This can be useful is your file systems doesn't
 # support long names like on DOS, Mac, or CD-ROM.
 # The default value is: NO.
 
 SHORT_NAMES            = NO
 
 # If the JAVADOC_AUTOBRIEF tag is set to YES then doxygen will interpret the
 # first line (until the first dot) of a Javadoc-style comment as the brief
 # description. If set to NO, the Javadoc-style will behave just like regular Qt-
 # style comments (thus requiring an explicit @brief command for a brief
 # description.)
 # The default value is: NO.
 
 JAVADOC_AUTOBRIEF      = YES
 
 # If the JAVADOC_BANNER tag is set to YES then doxygen will interpret a line
 # such as
 # /***************
 # as being the beginning of a Javadoc-style comment "banner". If set to NO, the
 # Javadoc-style will behave just like regular comments and it will not be
 # interpreted by doxygen.
 # The default value is: NO.
 
 JAVADOC_BANNER         = NO
 
 # If the QT_AUTOBRIEF tag is set to YES then doxygen will interpret the first
 # line (until the first dot) of a Qt-style comment as the brief description. If
 # set to NO, the Qt-style will behave just like regular Qt-style comments (thus
 # requiring an explicit \brief command for a brief description.)
 # The default value is: NO.
 
 QT_AUTOBRIEF           = NO
 
 # The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make doxygen treat a
 # multi-line C++ special comment block (i.e. a block of //! or /// comments) as
 # a brief description. This used to be the default behavior. The new default is
 # to treat a multi-line C++ comment block as a detailed description. Set this
 # tag to YES if you prefer the old behavior instead.
 #
 # Note that setting this tag to YES also means that rational rose comments are
 # not recognized any more.
 # The default value is: NO.
 
 MULTILINE_CPP_IS_BRIEF = NO
 
 # By default Python docstrings are displayed as preformatted text and doxygen's
 # special commands cannot be used. By setting PYTHON_DOCSTRING to NO the
 # doxygen's special commands can be used and the contents of the docstring
 # documentation blocks is shown as doxygen documentation.
 # The default value is: YES.
 
 PYTHON_DOCSTRING       = YES
 
 # If the INHERIT_DOCS tag is set to YES then an undocumented member inherits the
 # documentation from any documented member that it re-implements.
 # The default value is: YES.
 
 INHERIT_DOCS           = YES
 
 # If the SEPARATE_MEMBER_PAGES tag is set to YES then doxygen will produce a new
 # page for each member. If set to NO, the documentation of a member will be part
 # of the file/class/namespace that contains it.
 # The default value is: NO.
 
 SEPARATE_MEMBER_PAGES  = NO
 
 # The TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen
 # uses this value to replace tabs by spaces in code fragments.
 # Minimum value: 1, maximum value: 16, default value: 4.
 
 TAB_SIZE               = 8
 
 # This tag can be used to specify a number of aliases that act as commands in
 # the documentation. An alias has the form:
 # name=value
 # For example adding
 # "sideeffect=@par Side Effects:\n"
 # will allow you to put the command \sideeffect (or @sideeffect) in the
 # documentation, which will result in a user-defined paragraph with heading
 # "Side Effects:". You can put \n's in the value part of an alias to insert
 # newlines (in the resulting output). You can put ^^ in the value part of an
 # alias to insert a newline as if a physical newline was in the original file.
 # When you need a literal { or } or , in the value part of an alias you have to
 # escape them by means of a backslash (\), this can lead to conflicts with the
 # commands \{ and \} for these it is advised to use the version @{ and @} or use
 # a double escape (\\{ and \\})
 
 ALIASES                =
 
 # Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources
 # only. Doxygen will then generate output that is more tailored for C. For
 # instance, some of the names that are used will be different. The list of all
 # members will be omitted, etc.
 # The default value is: NO.
 
 OPTIMIZE_OUTPUT_FOR_C  = YES
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
 # Python sources only. Doxygen will then generate output that is more tailored
 # for that language. For instance, namespaces will be presented as packages,
 # qualified scopes will look different, etc.
 # The default value is: NO.
 
 OPTIMIZE_OUTPUT_JAVA   = NO
 
 # Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
 # sources. Doxygen will then generate output that is tailored for Fortran.
 # The default value is: NO.
 
 OPTIMIZE_FOR_FORTRAN   = NO
 
 # Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
 # sources. Doxygen will then generate output that is tailored for VHDL.
 # The default value is: NO.
 
 OPTIMIZE_OUTPUT_VHDL   = NO
 
 # Set the OPTIMIZE_OUTPUT_SLICE tag to YES if your project consists of Slice
 # sources only. Doxygen will then generate output that is more tailored for that
 # language. For instance, namespaces will be presented as modules, types will be
 # separated into more groups, etc.
 # The default value is: NO.
 
 OPTIMIZE_OUTPUT_SLICE  = NO
 
 # Doxygen selects the parser to use depending on the extension of the files it
 # parses. With this tag you can assign which parser to use for a given
 # extension. Doxygen has a built-in mapping, but you can override or extend it
 # using this tag. The format is ext=language, where ext is a file extension, and
 # language is one of the parsers supported by doxygen: IDL, Java, JavaScript,
 # Csharp (C#), C, C++, D, PHP, md (Markdown), Objective-C, Python, Slice, VHDL,
 # Fortran (fixed format Fortran: FortranFixed, free formatted Fortran:
 # FortranFree, unknown formatted Fortran: Fortran. In the later case the parser
 # tries to guess whether the code is fixed or free formatted code, this is the
 # default for Fortran type files). For instance to make doxygen treat .inc files
 # as Fortran files (default is PHP), and .f files as C (default is Fortran),
 # use: inc=Fortran f=C.
 #
 # Note: For files without extension you can use no_extension as a placeholder.
 #
 # Note that for custom extensions you also need to set FILE_PATTERNS otherwise
 # the files are not read by doxygen. When specifying no_extension you should add
 # * to the FILE_PATTERNS.
 #
 # Note see also the list of default file extension mappings.
 
 EXTENSION_MAPPING      =
 
 # If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
 # according to the Markdown format, which allows for more readable
 # documentation. See https://daringfireball.net/projects/markdown/ for details.
 # The output of markdown processing is further processed by doxygen, so you can
 # mix doxygen, HTML, and XML commands with Markdown formatting. Disable only in
 # case of backward compatibilities issues.
 # The default value is: YES.
 
 MARKDOWN_SUPPORT       = YES
 
 # When the TOC_INCLUDE_HEADINGS tag is set to a non-zero value, all headings up
 # to that level are automatically included in the table of contents, even if
 # they do not have an id attribute.
 # Note: This feature currently applies only to Markdown headings.
 # Minimum value: 0, maximum value: 99, default value: 5.
 # This tag requires that the tag MARKDOWN_SUPPORT is set to YES.
 
 TOC_INCLUDE_HEADINGS   = 5
 
 # When enabled doxygen tries to link words that correspond to documented
 # classes, or namespaces to their corresponding documentation. Such a link can
 # be prevented in individual cases by putting a % sign in front of the word or
 # globally by setting AUTOLINK_SUPPORT to NO.
 # The default value is: YES.
 
 AUTOLINK_SUPPORT       = YES
 
 # If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
 # to include (a tag file for) the STL sources as input, then you should set this
 # tag to YES in order to let doxygen match functions declarations and
 # definitions whose arguments contain STL classes (e.g. func(std::string);
 # versus func(std::string) {}). This also make the inheritance and collaboration
 # diagrams that involve STL classes more complete and accurate.
 # The default value is: NO.
 
 BUILTIN_STL_SUPPORT    = NO
 
 # If you use Microsoft's C++/CLI language, you should set this option to YES to
 # enable parsing support.
 # The default value is: NO.
 
 CPP_CLI_SUPPORT        = NO
 
 # Set the SIP_SUPPORT tag to YES if your project consists of sip (see:
 # https://www.riverbankcomputing.com/software/sip/intro) sources only. Doxygen
 # will parse them like normal C++ but will assume all classes use public instead
 # of private inheritance when no explicit protection keyword is present.
 # The default value is: NO.
 
 SIP_SUPPORT            = NO
 
 # For Microsoft's IDL there are propget and propput attributes to indicate
 # getter and setter methods for a property. Setting this option to YES will make
 # doxygen to replace the get and set methods by a property in the documentation.
 # This will only work if the methods are indeed getting or setting a simple
 # type. If this is not the case, or you want to show the methods anyway, you
 # should set this option to NO.
 # The default value is: YES.
 
 IDL_PROPERTY_SUPPORT   = YES
 
 # If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
 # tag is set to YES then doxygen will reuse the documentation of the first
 # member in the group (if any) for the other members of the group. By default
 # all members of a group must be documented explicitly.
 # The default value is: NO.
 
 DISTRIBUTE_GROUP_DOC   = NO
 
 # If one adds a struct or class to a group and this option is enabled, then also
 # any nested class or struct is added to the same group. By default this option
 # is disabled and one has to add nested compounds explicitly via \ingroup.
 # The default value is: NO.
 
 GROUP_NESTED_COMPOUNDS = NO
 
 # Set the SUBGROUPING tag to YES to allow class member groups of the same type
 # (for instance a group of public functions) to be put as a subgroup of that
 # type (e.g. under the Public Functions section). Set it to NO to prevent
 # subgrouping. Alternatively, this can be done per class using the
 # \nosubgrouping command.
 # The default value is: YES.
 
 SUBGROUPING            = YES
 
 # When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and unions
 # are shown inside the group in which they are included (e.g. using \ingroup)
 # instead of on a separate page (for HTML and Man pages) or section (for LaTeX
 # and RTF).
 #
 # Note that this feature does not work in combination with
 # SEPARATE_MEMBER_PAGES.
 # The default value is: NO.
 
 INLINE_GROUPED_CLASSES = NO
 
 # When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and unions
 # with only public data fields or simple typedef fields will be shown inline in
 # the documentation of the scope in which they are defined (i.e. file,
 # namespace, or group documentation), provided this scope is documented. If set
 # to NO, structs, classes, and unions are shown on a separate page (for HTML and
 # Man pages) or section (for LaTeX and RTF).
 # The default value is: NO.
 
 INLINE_SIMPLE_STRUCTS  = NO
 
 # When TYPEDEF_HIDES_STRUCT tag is enabled, a typedef of a struct, union, or
 # enum is documented as struct, union, or enum with the name of the typedef. So
 # typedef struct TypeS {} TypeT, will appear in the documentation as a struct
 # with name TypeT. When disabled the typedef will appear as a member of a file,
 # namespace, or class. And the struct will be named TypeS. This can typically be
 # useful for C code in case the coding convention dictates that all compound
 # types are typedef'ed and only the typedef is referenced, never the tag name.
 # The default value is: NO.
 
 TYPEDEF_HIDES_STRUCT   = NO
 
 # The size of the symbol lookup cache can be set using LOOKUP_CACHE_SIZE. This
 # cache is used to resolve symbols given their name and scope. Since this can be
 # an expensive process and often the same symbol appears multiple times in the
 # code, doxygen keeps a cache of pre-resolved symbols. If the cache is too small
 # doxygen will become slower. If the cache is too large, memory is wasted. The
 # cache size is given by this formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range
 # is 0..9, the default is 0, corresponding to a cache size of 2^16=65536
 # symbols. At the end of a run doxygen will report the cache usage and suggest
 # the optimal cache size from a speed point of view.
 # Minimum value: 0, maximum value: 9, default value: 0.
 
 LOOKUP_CACHE_SIZE      = 0
 
 # The NUM_PROC_THREADS specifies the number threads doxygen is allowed to use
 # during processing. When set to 0 doxygen will based this on the number of
 # cores available in the system. You can set it explicitly to a value larger
 # than 0 to get more control over the balance between CPU load and processing
 # speed. At this moment only the input processing can be done using multiple
 # threads. Since this is still an experimental feature the default is set to 1,
 # which efficively disables parallel processing. Please report any issues you
 # encounter. Generating dot graphs in parallel is controlled by the
 # DOT_NUM_THREADS setting.
 # Minimum value: 0, maximum value: 32, default value: 1.
 
 NUM_PROC_THREADS       = 1
 
 #---------------------------------------------------------------------------
 # Build related configuration options
 #---------------------------------------------------------------------------
 
 # If the EXTRACT_ALL tag is set to YES, doxygen will assume all entities in
 # documentation are documented, even if no documentation was available. Private
 # class members and static file members will be hidden unless the
 # EXTRACT_PRIVATE respectively EXTRACT_STATIC tags are set to YES.
 # Note: This will also disable the warnings about undocumented members that are
 # normally produced when WARNINGS is set to YES.
 # The default value is: NO.
 
 EXTRACT_ALL            = YES
 
 # If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
 # be included in the documentation.
 # The default value is: NO.
 
 EXTRACT_PRIVATE        = NO
 
 # If the EXTRACT_PRIV_VIRTUAL tag is set to YES, documented private virtual
 # methods of a class will be included in the documentation.
 # The default value is: NO.
 
 EXTRACT_PRIV_VIRTUAL   = NO
 
 # If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
 # scope will be included in the documentation.
 # The default value is: NO.
 
 EXTRACT_PACKAGE        = NO
 
 # If the EXTRACT_STATIC tag is set to YES, all static members of a file will be
 # included in the documentation.
 # The default value is: NO.
 
 EXTRACT_STATIC         = YES
 
 # If the EXTRACT_LOCAL_CLASSES tag is set to YES, classes (and structs) defined
 # locally in source files will be included in the documentation. If set to NO,
 # only classes defined in header files are included. Does not have any effect
 # for Java sources.
 # The default value is: YES.
 
 EXTRACT_LOCAL_CLASSES  = NO
 
 # This flag is only useful for Objective-C code. If set to YES, local methods,
 # which are defined in the implementation section but not in the interface are
 # included in the documentation. If set to NO, only methods in the interface are
 # included.
 # The default value is: NO.
 
 EXTRACT_LOCAL_METHODS  = NO
 
 # If this flag is set to YES, the members of anonymous namespaces will be
 # extracted and appear in the documentation as a namespace called
 # 'anonymous_namespace{file}', where file will be replaced with the base name of
 # the file that contains the anonymous namespace. By default anonymous namespace
 # are hidden.
 # The default value is: NO.
 
 EXTRACT_ANON_NSPACES   = YES
 
 # If this flag is set to YES, the name of an unnamed parameter in a declaration
 # will be determined by the corresponding definition. By default unnamed
 # parameters remain unnamed in the output.
 # The default value is: YES.
 
 RESOLVE_UNNAMED_PARAMS = YES
 
 # If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all
 # undocumented members inside documented classes or files. If set to NO these
 # members will be included in the various overviews, but no documentation
 # section is generated. This option has no effect if EXTRACT_ALL is enabled.
 # The default value is: NO.
 
 HIDE_UNDOC_MEMBERS     = NO
 
 # If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
 # undocumented classes that are normally visible in the class hierarchy. If set
 # to NO, these classes will be included in the various overviews. This option
 # has no effect if EXTRACT_ALL is enabled.
 # The default value is: NO.
 
 HIDE_UNDOC_CLASSES     = NO
 
 # If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
 # declarations. If set to NO, these declarations will be included in the
 # documentation.
 # The default value is: NO.
 
 HIDE_FRIEND_COMPOUNDS  = NO
 
 # If the HIDE_IN_BODY_DOCS tag is set to YES, doxygen will hide any
 # documentation blocks found inside the body of a function. If set to NO, these
 # blocks will be appended to the function's detailed documentation block.
 # The default value is: NO.
 
 HIDE_IN_BODY_DOCS      = NO
 
 # The INTERNAL_DOCS tag determines if documentation that is typed after a
 # \internal command is included. If the tag is set to NO then the documentation
 # will be excluded. Set it to YES to include the internal documentation.
 # The default value is: NO.
 
 INTERNAL_DOCS          = YES
 
 # With the correct setting of option CASE_SENSE_NAMES doxygen will better be
 # able to match the capabilities of the underlying filesystem. In case the
 # filesystem is case sensitive (i.e. it supports files in the same directory
 # whose names only differ in casing), the option must be set to YES to properly
 # deal with such files in case they appear in the input. For filesystems that
 # are not case sensitive the option should be be set to NO to properly deal with
 # output files written for symbols that only differ in casing, such as for two
 # classes, one named CLASS and the other named Class, and to also support
 # references to files without having to specify the exact matching casing. On
 # Windows (including Cygwin) and MacOS, users should typically set this option
 # to NO, whereas on Linux or other Unix flavors it should typically be set to
 # YES.
 # The default value is: system dependent.
 
 CASE_SENSE_NAMES       = YES
 
 # If the HIDE_SCOPE_NAMES tag is set to NO then doxygen will show members with
 # their full class and namespace scopes in the documentation. If set to YES, the
 # scope will be hidden.
 # The default value is: NO.
 
 HIDE_SCOPE_NAMES       = NO
 
 # If the HIDE_COMPOUND_REFERENCE tag is set to NO (default) then doxygen will
 # append additional text to a page's title, such as Class Reference. If set to
 # YES the compound reference will be hidden.
 # The default value is: NO.
 
 HIDE_COMPOUND_REFERENCE= NO
 
 # If the SHOW_INCLUDE_FILES tag is set to YES then doxygen will put a list of
 # the files that are included by a file in the documentation of that file.
 # The default value is: YES.
 
 SHOW_INCLUDE_FILES     = YES
 
 # If the SHOW_GROUPED_MEMB_INC tag is set to YES then Doxygen will add for each
 # grouped member an include statement to the documentation, telling the reader
 # which file to include in order to use the member.
 # The default value is: NO.
 
 SHOW_GROUPED_MEMB_INC  = NO
 
 # If the FORCE_LOCAL_INCLUDES tag is set to YES then doxygen will list include
 # files with double quotes in the documentation rather than with sharp brackets.
 # The default value is: NO.
 
 FORCE_LOCAL_INCLUDES   = NO
 
 # If the INLINE_INFO tag is set to YES then a tag [inline] is inserted in the
 # documentation for inline members.
 # The default value is: YES.
 
 INLINE_INFO            = YES
 
 # If the SORT_MEMBER_DOCS tag is set to YES then doxygen will sort the
 # (detailed) documentation of file and class members alphabetically by member
 # name. If set to NO, the members will appear in declaration order.
 # The default value is: YES.
 
 SORT_MEMBER_DOCS       = NO
 
 # If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief
 # descriptions of file, namespace and class members alphabetically by member
 # name. If set to NO, the members will appear in declaration order. Note that
 # this will also influence the order of the classes in the class list.
 # The default value is: NO.
 
 SORT_BRIEF_DOCS        = NO
 
 # If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the
 # (brief and detailed) documentation of class members so that constructors and
 # destructors are listed first. If set to NO the constructors will appear in the
 # respective orders defined by SORT_BRIEF_DOCS and SORT_MEMBER_DOCS.
 # Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting brief
 # member documentation.
 # Note: If SORT_MEMBER_DOCS is set to NO this option is ignored for sorting
 # detailed member documentation.
 # The default value is: NO.
 
 SORT_MEMBERS_CTORS_1ST = NO
 
 # If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the hierarchy
 # of group names into alphabetical order. If set to NO the group names will
 # appear in their defined order.
 # The default value is: NO.
 
 SORT_GROUP_NAMES       = NO
 
 # If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by
 # fully-qualified names, including namespaces. If set to NO, the class list will
 # be sorted only by class name, not including the namespace part.
 # Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
 # Note: This option applies only to the class list, not to the alphabetical
 # list.
 # The default value is: NO.
 
 SORT_BY_SCOPE_NAME     = NO
 
 # If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to do proper
 # type resolution of all parameters of a function it will reject a match between
 # the prototype and the implementation of a member function even if there is
 # only one candidate or it is obvious which candidate to choose by doing a
 # simple string match. By disabling STRICT_PROTO_MATCHING doxygen will still
 # accept a match between prototype and implementation in such cases.
 # The default value is: NO.
 
 STRICT_PROTO_MATCHING  = NO
 
 # The GENERATE_TODOLIST tag can be used to enable (YES) or disable (NO) the todo
 # list. This list is created by putting \todo commands in the documentation.
 # The default value is: YES.
 
 GENERATE_TODOLIST      = YES
 
 # The GENERATE_TESTLIST tag can be used to enable (YES) or disable (NO) the test
 # list. This list is created by putting \test commands in the documentation.
 # The default value is: YES.
 
 GENERATE_TESTLIST      = YES
 
 # The GENERATE_BUGLIST tag can be used to enable (YES) or disable (NO) the bug
 # list. This list is created by putting \bug commands in the documentation.
 # The default value is: YES.
 
 GENERATE_BUGLIST       = YES
 
 # The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or disable (NO)
 # the deprecated list. This list is created by putting \deprecated commands in
 # the documentation.
 # The default value is: YES.
 
 GENERATE_DEPRECATEDLIST= YES
 
 # The ENABLED_SECTIONS tag can be used to enable conditional documentation
 # sections, marked by \if <section_label> ... \endif and \cond <section_label>
 # ... \endcond blocks.
 
 ENABLED_SECTIONS       =
 
 # The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the
 # initial value of a variable or macro / define can have for it to appear in the
 # documentation. If the initializer consists of more lines than specified here
 # it will be hidden. Use a value of 0 to hide initializers completely. The
 # appearance of the value of individual variables and macros / defines can be
 # controlled using \showinitializer or \hideinitializer command in the
 # documentation regardless of this setting.
 # Minimum value: 0, maximum value: 10000, default value: 30.
 
 MAX_INITIALIZER_LINES  = 30
 
 # Set the SHOW_USED_FILES tag to NO to disable the list of files generated at
 # the bottom of the documentation of classes and structs. If set to YES, the
 # list will mention the files that were used to generate the documentation.
 # The default value is: YES.
 
 SHOW_USED_FILES        = YES
 
 # Set the SHOW_FILES tag to NO to disable the generation of the Files page. This
 # will remove the Files entry from the Quick Index and from the Folder Tree View
 # (if specified).
 # The default value is: YES.
 
 SHOW_FILES             = YES
 
 # Set the SHOW_NAMESPACES tag to NO to disable the generation of the Namespaces
 # page. This will remove the Namespaces entry from the Quick Index and from the
 # Folder Tree View (if specified).
 # The default value is: YES.
 
 SHOW_NAMESPACES        = YES
 
 # The FILE_VERSION_FILTER tag can be used to specify a program or script that
 # doxygen should invoke to get the current version for each file (typically from
 # the version control system). Doxygen will invoke the program by executing (via
 # popen()) the command command input-file, where command is the value of the
 # FILE_VERSION_FILTER tag, and input-file is the name of an input file provided
 # by doxygen. Whatever the program writes to standard output is used as the file
 # version. For an example see the documentation.
 
 FILE_VERSION_FILTER    =
 
 # The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
 # by doxygen. The layout file controls the global structure of the generated
 # output files in an output format independent way. To create the layout file
 # that represents doxygen's defaults, run doxygen with the -l option. You can
 # optionally specify a file name after the option, if omitted DoxygenLayout.xml
 # will be used as the name of the layout file.
 #
 # Note that if you run doxygen from a directory containing a file called
 # DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE
 # tag is left empty.
 
 LAYOUT_FILE            =
 
 # The CITE_BIB_FILES tag can be used to specify one or more bib files containing
 # the reference definitions. This must be a list of .bib files. The .bib
 # extension is automatically appended if omitted. This requires the bibtex tool
 # to be installed. See also https://en.wikipedia.org/wiki/BibTeX for more info.
 # For LaTeX the style of the bibliography can be controlled using
 # LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
 # search path. See also \cite for info how to create references.
 
 CITE_BIB_FILES         =
 
 #---------------------------------------------------------------------------
 # Configuration options related to warning and progress messages
 #---------------------------------------------------------------------------
 
 # The QUIET tag can be used to turn on/off the messages that are generated to
 # standard output by doxygen. If QUIET is set to YES this implies that the
 # messages are off.
 # The default value is: NO.
 
 QUIET                  = YES
 
 # The WARNINGS tag can be used to turn on/off the warning messages that are
 # generated to standard error (stderr) by doxygen. If WARNINGS is set to YES
 # this implies that the warnings are on.
 #
 # Tip: Turn warnings on while writing the documentation.
 # The default value is: YES.
 
 WARNINGS               = YES
 
 # If the WARN_IF_UNDOCUMENTED tag is set to YES then doxygen will generate
 # warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag
 # will automatically be disabled.
 # The default value is: YES.
 
 WARN_IF_UNDOCUMENTED   = YES
 
 # If the WARN_IF_DOC_ERROR tag is set to YES, doxygen will generate warnings for
 # potential errors in the documentation, such as not documenting some parameters
 # in a documented function, or documenting parameters that don't exist or using
 # markup commands wrongly.
 # The default value is: YES.
 
 WARN_IF_DOC_ERROR      = YES
 
 # This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
 # are documented, but have no documentation for their parameters or return
 # value. If set to NO, doxygen will only warn about wrong or incomplete
 # parameter documentation, but not about the absence of documentation. If
 # EXTRACT_ALL is set to YES then this flag will automatically be disabled.
 # The default value is: NO.
 
 WARN_NO_PARAMDOC       = YES
 
 # If the WARN_AS_ERROR tag is set to YES then doxygen will immediately stop when
 # a warning is encountered. If the WARN_AS_ERROR tag is set to FAIL_ON_WARNINGS
 # then doxygen will continue running as if WARN_AS_ERROR tag is set to NO, but
 # at the end of the doxygen process doxygen will return with a non-zero status.
 # Possible values are: NO, YES and FAIL_ON_WARNINGS.
 # The default value is: NO.
 
 WARN_AS_ERROR          = NO
 
 # The WARN_FORMAT tag determines the format of the warning messages that doxygen
 # can produce. The string should contain the $file, $line, and $text tags, which
 # will be replaced by the file and line number from which the warning originated
 # and the warning text. Optionally the format may contain $version, which will
 # be replaced by the version of the file (if it could be obtained via
 # FILE_VERSION_FILTER)
 # The default value is: $file:$line: $text.
 
 WARN_FORMAT            = "$file:$line: $text"
 
 # The WARN_LOGFILE tag can be used to specify a file to which warning and error
 # messages should be written. If left blank the output is written to standard
 # error (stderr).
 
 WARN_LOGFILE           =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the input files
 #---------------------------------------------------------------------------
 
 # The INPUT tag is used to specify the files and/or directories that contain
 # documented source files. You may enter file names like myfile.cpp or
 # directories like /usr/src/myproject. Separate the files or directories with
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                  = ../../src/
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
 # libiconv (or the iconv built into libc) for the transcoding. See the libiconv
 # documentation (see:
 # https://www.gnu.org/software/libiconv/) for the list of possible encodings.
 # The default value is: UTF-8.
 
 INPUT_ENCODING         = UTF-8
 
 # If the value of the INPUT tag contains directories, you can use the
 # FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and
 # *.h) to filter out the source-files in the directories.
 #
 # Note that for custom extensions or not directly supported extensions you also
 # need to set EXTENSION_MAPPING for the extension otherwise the files are not
 # read by doxygen.
 #
 # Note the list of default checked file patterns might differ from the list of
 # default file extension mappings.
 #
 # If left blank the following patterns are tested:*.c, *.cc, *.cxx, *.cpp,
 # *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
 # *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc,
 # *.m, *.markdown, *.md, *.mm, *.dox (to be provided as doxygen C comment),
 # *.py, *.pyw, *.f90, *.f95, *.f03, *.f08, *.f18, *.f, *.for, *.vhd, *.vhdl,
 # *.ucf, *.qsf and *.ice.
 
 FILE_PATTERNS          = *.c \
                          *.h
 
 # The RECURSIVE tag can be used to specify whether or not subdirectories should
 # be searched for input files as well.
 # The default value is: NO.
 
 RECURSIVE              = YES
 
 # The EXCLUDE tag can be used to specify files and/or directories that should be
 # excluded from the INPUT source files. This way you can easily exclude a
 # subdirectory from a directory tree whose root is specified with the INPUT tag.
 #
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
 EXCLUDE                =
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded
 # from the input.
 # The default value is: NO.
 
 EXCLUDE_SYMLINKS       = NO
 
 # If the value of the INPUT tag contains directories, you can use the
 # EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
 # certain files from those directories.
 #
 # Note that the wildcards are matched against the file with absolute path, so to
 # exclude all test directories for example use the pattern */test/*
 
 EXCLUDE_PATTERNS       = */test_* \
                          */.git/* \
                          */perf_* \
                          */tls_test_* \
                          sync_config.h
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
 # (namespaces, classes, functions, etc.) that should be excluded from the
 # output. The symbol name can be a fully qualified name, a word, or if the
 # wildcard * is used, a substring. Examples: ANamespace, AClass,
 # AClass::ANamespace, ANamespace::*Test
 #
 # Note that the wildcards are matched against the file with absolute path, so to
 # exclude all test directories use the pattern */test/*
 
 EXCLUDE_SYMBOLS        =
 
 # The EXAMPLE_PATH tag can be used to specify one or more files or directories
 # that contain example code fragments that are included (see the \include
 # command).
 
 EXAMPLE_PATH           =
 
 # If the value of the EXAMPLE_PATH tag contains directories, you can use the
 # EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp and
 # *.h) to filter out the source-files in the directories. If left blank all
 # files are included.
 
 EXAMPLE_PATTERNS       = *
 
 # If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
 # searched for input files to be used with the \include or \dontinclude commands
 # irrespective of the value of the RECURSIVE tag.
 # The default value is: NO.
 
 EXAMPLE_RECURSIVE      = NO
 
 # The IMAGE_PATH tag can be used to specify one or more files or directories
 # that contain images that are to be included in the documentation (see the
 # \image command).
 
 IMAGE_PATH             =
 
 # The INPUT_FILTER tag can be used to specify a program that doxygen should
 # invoke to filter for each input file. Doxygen will invoke the filter program
 # by executing (via popen()) the command:
 #
 # <filter> <input-file>
 #
 # where <filter> is the value of the INPUT_FILTER tag, and <input-file> is the
 # name of an input file. Doxygen will then use the output that the filter
 # program writes to standard output. If FILTER_PATTERNS is specified, this tag
 # will be ignored.
 #
 # Note that the filter must not add or remove lines; it is applied before the
 # code is scanned, but not when the output code is generated. If lines are added
 # or removed, the anchors will not be placed correctly.
 #
 # Note that for custom extensions or not directly supported extensions you also
 # need to set EXTENSION_MAPPING for the extension otherwise the files are not
 # properly processed by doxygen.
 
 INPUT_FILTER           =
 
 # The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
 # basis. Doxygen will compare the file name with each pattern and apply the
 # filter if there is a match. The filters are a list of the form: pattern=filter
 # (like *.cpp=my_cpp_filter). See INPUT_FILTER for further information on how
 # filters are used. If the FILTER_PATTERNS tag is empty or if none of the
 # patterns match the file name, INPUT_FILTER is applied.
 #
 # Note that for custom extensions or not directly supported extensions you also
 # need to set EXTENSION_MAPPING for the extension otherwise the files are not
 # properly processed by doxygen.
 
 FILTER_PATTERNS        =
 
 # If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
 # INPUT_FILTER) will also be used to filter the input files that are used for
 # producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).
 # The default value is: NO.
 
 FILTER_SOURCE_FILES    = NO
 
 # The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
 # pattern. A pattern will override the setting for FILTER_PATTERN (if any) and
 # it is also possible to disable source filtering for a specific pattern using
 # *.ext= (so without naming a filter).
 # This tag requires that the tag FILTER_SOURCE_FILES is set to YES.
 
 FILTER_SOURCE_PATTERNS =
 
 # If the USE_MDFILE_AS_MAINPAGE tag refers to the name of a markdown file that
 # is part of the input, its contents will be placed on the main page
 # (index.html). This can be useful if you have a project on for instance GitHub
 # and want to reuse the introduction page also for the doxygen output.
 
 USE_MDFILE_AS_MAINPAGE =
 
 #---------------------------------------------------------------------------
 # Configuration options related to source browsing
 #---------------------------------------------------------------------------
 
 # If the SOURCE_BROWSER tag is set to YES then a list of source files will be
 # generated. Documented entities will be cross-referenced with these sources.
 #
 # Note: To get rid of all source code in the generated output, make sure that
 # also VERBATIM_HEADERS is set to NO.
 # The default value is: NO.
 
 SOURCE_BROWSER         = YES
 
 # Setting the INLINE_SOURCES tag to YES will include the body of functions,
 # classes and enums directly into the documentation.
 # The default value is: NO.
 
 INLINE_SOURCES         = NO
 
 # Setting the STRIP_CODE_COMMENTS tag to YES will instruct doxygen to hide any
 # special comment blocks from generated source code fragments. Normal C, C++ and
 # Fortran comments will always remain visible.
 # The default value is: YES.
 
 STRIP_CODE_COMMENTS    = YES
 
 # If the REFERENCED_BY_RELATION tag is set to YES then for each documented
 # entity all documented functions referencing it will be listed.
 # The default value is: NO.
 
 REFERENCED_BY_RELATION = YES
 
 # If the REFERENCES_RELATION tag is set to YES then for each documented function
 # all documented entities called/used by that function will be listed.
 # The default value is: NO.
 
 REFERENCES_RELATION    = YES
 
 # If the REFERENCES_LINK_SOURCE tag is set to YES and SOURCE_BROWSER tag is set
 # to YES then the hyperlinks from functions in REFERENCES_RELATION and
 # REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will
 # link to the documentation.
 # The default value is: YES.
 
 REFERENCES_LINK_SOURCE = YES
 
 # If SOURCE_TOOLTIPS is enabled (the default) then hovering a hyperlink in the
 # source code will show a tooltip with additional information such as prototype,
 # brief description and links to the definition and documentation. Since this
 # will make the HTML file larger and loading of large files a bit slower, you
 # can opt to disable this feature.
 # The default value is: YES.
 # This tag requires that the tag SOURCE_BROWSER is set to YES.
 
 SOURCE_TOOLTIPS        = YES
 
 # If the USE_HTAGS tag is set to YES then the references to source code will
 # point to the HTML generated by the htags(1) tool instead of doxygen built-in
 # source browser. The htags tool is part of GNU's global source tagging system
 # (see https://www.gnu.org/software/global/global.html). You will need version
 # 4.8.6 or higher.
 #
 # To use it do the following:
 # - Install the latest version of global
 # - Enable SOURCE_BROWSER and USE_HTAGS in the configuration file
 # - Make sure the INPUT points to the root of the source tree
 # - Run doxygen as normal
 #
 # Doxygen will invoke htags (and that will in turn invoke gtags), so these
 # tools must be available from the command line (i.e. in the search path).
 #
 # The result: instead of the source browser generated by doxygen, the links to
 # source code will now point to the output of htags.
 # The default value is: NO.
 # This tag requires that the tag SOURCE_BROWSER is set to YES.
 
 USE_HTAGS              = NO
 
 # If the VERBATIM_HEADERS tag is set the YES then doxygen will generate a
 # verbatim copy of the header file for each class for which an include is
 # specified. Set to NO to disable this.
 # See also: Section \class.
 # The default value is: YES.
 
 VERBATIM_HEADERS       = NO
 
 # If the CLANG_ASSISTED_PARSING tag is set to YES then doxygen will use the
 # clang parser (see:
 # http://clang.llvm.org/) for more accurate parsing at the cost of reduced
 # performance. This can be particularly helpful with template rich C++ code for
 # which doxygen's built-in parser lacks the necessary type information.
 # Note: The availability of this option depends on whether or not doxygen was
 # generated with the -Duse_libclang=ON option for CMake.
 # The default value is: NO.
 
 CLANG_ASSISTED_PARSING = NO
 
 # If clang assisted parsing is enabled and the CLANG_ADD_INC_PATHS tag is set to
 # YES then doxygen will add the directory of each input to the include path.
 # The default value is: YES.
 
 CLANG_ADD_INC_PATHS    = YES
 
 # If clang assisted parsing is enabled you can provide the compiler with command
 # line options that you would normally use when invoking the compiler. Note that
 # the include paths will already be set by doxygen for the files and directories
 # specified with INPUT and INCLUDE_PATH.
 # This tag requires that the tag CLANG_ASSISTED_PARSING is set to YES.
 
 CLANG_OPTIONS          =
 
 # If clang assisted parsing is enabled you can provide the clang parser with the
 # path to the directory containing a file called compile_commands.json. This
 # file is the compilation database (see:
 # http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html) containing the
 # options used when the source files were built. This is equivalent to
 # specifying the -p option to a clang tool, such as clang-check. These options
 # will then be passed to the parser. Any options specified with CLANG_OPTIONS
 # will be added as well.
 # Note: The availability of this option depends on whether or not doxygen was
 # generated with the -Duse_libclang=ON option for CMake.
 
 CLANG_DATABASE_PATH    =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the alphabetical class index
 #---------------------------------------------------------------------------
 
 # If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index of all
 # compounds will be generated. Enable this if the project contains a lot of
 # classes, structs, unions or interfaces.
 # The default value is: YES.
 
 ALPHABETICAL_INDEX     = YES
 
 # In case all classes in a project start with a common prefix, all classes will
 # be put under the same header in the alphabetical index. The IGNORE_PREFIX tag
 # can be used to specify a prefix (or a list of prefixes) that should be ignored
 # while generating the index headers.
 # This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
 
 IGNORE_PREFIX          = SYNC_
 
 #---------------------------------------------------------------------------
 # Configuration options related to the HTML output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_HTML tag is set to YES, doxygen will generate HTML output
 # The default value is: YES.
 
 GENERATE_HTML          = YES
 
 # The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
 # it.
 # The default directory is: html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_OUTPUT            = html
 
 # The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
 # generated HTML page (for example: .htm, .php, .asp).
 # The default value is: .html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_FILE_EXTENSION    = .html
 
 # The HTML_HEADER tag can be used to specify a user-defined HTML header file for
 # each generated HTML page. If the tag is left blank doxygen will generate a
 # standard header.
 #
 # To get valid HTML the header file that includes any scripts and style sheets
 # that doxygen needs, which is dependent on the configuration options used (e.g.
 # the setting GENERATE_TREEVIEW). It is highly recommended to start with a
 # default header using
 # doxygen -w html new_header.html new_footer.html new_stylesheet.css
 # YourConfigFile
 # and then modify the file new_header.html. See also section "Doxygen usage"
 # for information on how to generate the default header that doxygen normally
 # uses.
 # Note: The header is subject to change so you typically have to regenerate the
 # default header when upgrading to a newer version of doxygen. For a description
 # of the possible markers and block names see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_HEADER            =
 
 # The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
 # generated HTML page. If the tag is left blank doxygen will generate a standard
 # footer. See HTML_HEADER for more information on how to generate a default
 # footer and what special commands can be used inside the footer. See also
 # section "Doxygen usage" for information on how to generate the default footer
 # that doxygen normally uses.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_FOOTER            =
 
 # The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
 # sheet that is used by each HTML page. It can be used to fine-tune the look of
 # the HTML output. If left blank doxygen will generate a default style sheet.
 # See also section "Doxygen usage" for information on how to generate the style
 # sheet that doxygen normally uses.
 # Note: It is recommended to use HTML_EXTRA_STYLESHEET instead of this tag, as
 # it is more robust and this tag (HTML_STYLESHEET) will in the future become
 # obsolete.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_STYLESHEET        =
 
 # The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
 # cascading style sheets that are included after the standard style sheets
 # created by doxygen. Using this option one can overrule certain style aspects.
 # This is preferred over using HTML_STYLESHEET since it does not replace the
 # standard style sheet and is therefore more robust against future updates.
 # Doxygen will copy the style sheet files to the output directory.
 # Note: The order of the extra style sheet files is of importance (e.g. the last
 # style sheet in the list overrules the setting of the previous ones in the
 # list). For an example see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_EXTRA_STYLESHEET  =
 
 # The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the HTML output directory. Note
 # that these files will be copied to the base HTML output directory. Use the
 # $relpath^ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
 # files. In the HTML_STYLESHEET file, use the file name only. Also note that the
 # files will be copied as-is; there are no commands or markers available.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_EXTRA_FILES       =
 
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
 # this color. Hue is specified as an angle on a colorwheel, see
 # https://en.wikipedia.org/wiki/Hue for more information. For instance the value
 # 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
 # purple, and 360 is red again.
 # Minimum value: 0, maximum value: 359, default value: 220.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_COLORSTYLE_HUE    = 220
 
 # The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of the colors
 # in the HTML output. For a value of 0 the output will use grayscales only. A
 # value of 255 will produce the most vivid colors.
 # Minimum value: 0, maximum value: 255, default value: 100.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_COLORSTYLE_SAT    = 100
 
 # The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to the
 # luminance component of the colors in the HTML output. Values below 100
 # gradually make the output lighter, whereas values above 100 make the output
 # darker. The value divided by 100 is the actual gamma applied, so 80 represents
 # a gamma of 0.8, The value 220 represents a gamma of 2.2, and 100 does not
 # change the gamma.
 # Minimum value: 40, maximum value: 240, default value: 80.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_COLORSTYLE_GAMMA  = 80
 
 # If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
 # page will contain the date and time when the page was generated. Setting this
 # to YES can help to show when doxygen was last run and thus if the
 # documentation is up to date.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_TIMESTAMP         = NO
 
 # If the HTML_DYNAMIC_MENUS tag is set to YES then the generated HTML
 # documentation will contain a main index with vertical navigation menus that
 # are dynamically created via JavaScript. If disabled, the navigation index will
 # consists of multiple levels of tabs that are statically embedded in every HTML
 # page. Disable this option to support browsers that do not have JavaScript,
 # like the Qt help browser.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_DYNAMIC_MENUS     = YES
 
 # If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
 # documentation will contain sections that can be hidden and shown after the
 # page has loaded.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_DYNAMIC_SECTIONS  = NO
 
 # With HTML_INDEX_NUM_ENTRIES one can control the preferred number of entries
 # shown in the various tree structured indices initially; the user can expand
 # and collapse entries dynamically later on. Doxygen will expand the tree to
 # such a level that at most the specified number of entries are visible (unless
 # a fully collapsed tree already exceeds this amount). So setting the number of
 # entries 1 will produce a full collapsed tree by default. 0 is a special value
 # representing an infinite number of entries and will result in a full expanded
 # tree by default.
 # Minimum value: 0, maximum value: 9999, default value: 100.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_INDEX_NUM_ENTRIES = 100
 
 # If the GENERATE_DOCSET tag is set to YES, additional index files will be
 # generated that can be used as input for Apple's Xcode 3 integrated development
 # environment (see:
 # https://developer.apple.com/xcode/), introduced with OSX 10.5 (Leopard). To
 # create a documentation set, doxygen will generate a Makefile in the HTML
 # output directory. Running make will produce the docset in that directory and
 # running make install will install the docset in
 # ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at
 # startup. See https://developer.apple.com/library/archive/featuredarticles/Doxy
 # genXcode/_index.html for more information.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 GENERATE_DOCSET        = NO
 
 # This tag determines the name of the docset feed. A documentation feed provides
 # an umbrella under which multiple documentation sets from a single provider
 # (such as a company or product suite) can be grouped.
 # The default value is: Doxygen generated docs.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
 DOCSET_FEEDNAME        = "GNU Taler Source Documentation"
 
 # This tag specifies a string that should uniquely identify the documentation
 # set bundle. This should be a reverse domain-name style string, e.g.
 # com.mycompany.MyDocSet. Doxygen will append .docset to the name.
 # The default value is: org.doxygen.Project.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
 DOCSET_BUNDLE_ID       = net.taler.sync
 
 # The DOCSET_PUBLISHER_ID tag specifies a string that should uniquely identify
 # the documentation publisher. This should be a reverse domain-name style
 # string, e.g. com.mycompany.MyDocSet.documentation.
 # The default value is: org.doxygen.Publisher.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
 DOCSET_PUBLISHER_ID    = net.taler
 
 # The DOCSET_PUBLISHER_NAME tag identifies the documentation publisher.
 # The default value is: Publisher.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
 DOCSET_PUBLISHER_NAME  = Taler Systems SA
 
 # If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
 # additional HTML index files: index.hhp, index.hhc, and index.hhk. The
 # index.hhp is a project file that can be read by Microsoft's HTML Help Workshop
 # (see:
 # https://www.microsoft.com/en-us/download/details.aspx?id=21138) on Windows.
 #
 # The HTML Help Workshop contains a compiler that can convert all HTML output
 # generated by doxygen into a single compiled HTML file (.chm). Compiled HTML
 # files are now used as the Windows 98 help format, and will replace the old
 # Windows help format (.hlp) on all Windows platforms in the future. Compressed
 # HTML files also contain an index, a table of contents, and you can search for
 # words in the documentation. The HTML workshop also contains a viewer for
 # compressed HTML files.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 GENERATE_HTMLHELP      = NO
 
 # The CHM_FILE tag can be used to specify the file name of the resulting .chm
 # file. You can add a path in front of the file if the result should not be
 # written to the html output directory.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 CHM_FILE               =
 
 # The HHC_LOCATION tag can be used to specify the location (absolute path
 # including file name) of the HTML help compiler (hhc.exe). If non-empty,
 # doxygen will try to run the HTML help compiler on the generated index.hhp.
 # The file has to be specified with full path.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 HHC_LOCATION           =
 
 # The GENERATE_CHI flag controls if a separate .chi index file is generated
 # (YES) or that it should be included in the main .chm file (NO).
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 GENERATE_CHI           = NO
 
 # The CHM_INDEX_ENCODING is used to encode HtmlHelp index (hhk), content (hhc)
 # and project file content.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 CHM_INDEX_ENCODING     =
 
 # The BINARY_TOC flag controls whether a binary table of contents is generated
 # (YES) or a normal table of contents (NO) in the .chm file. Furthermore it
 # enables the Previous and Next buttons.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 BINARY_TOC             = NO
 
 # The TOC_EXPAND flag can be set to YES to add extra items for group members to
 # the table of contents of the HTML help documentation and to the tree view.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 TOC_EXPAND             = NO
 
 # If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
 # QHP_VIRTUAL_FOLDER are set, an additional index file will be generated that
 # can be used as input for Qt's qhelpgenerator to generate a Qt Compressed Help
 # (.qch) of the generated HTML documentation.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 GENERATE_QHP           = NO
 
 # If the QHG_LOCATION tag is specified, the QCH_FILE tag can be used to specify
 # the file name of the resulting .qch file. The path specified is relative to
 # the HTML output folder.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QCH_FILE               =
 
 # The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
 # Project output. For more information please see Qt Help Project / Namespace
 # (see:
 # https://doc.qt.io/archives/qt-4.8/qthelpproject.html#namespace).
 # The default value is: org.doxygen.Project.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHP_NAMESPACE          = org.doxygen.Project
 
 # The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt
 # Help Project output. For more information please see Qt Help Project / Virtual
 # Folders (see:
 # https://doc.qt.io/archives/qt-4.8/qthelpproject.html#virtual-folders).
 # The default value is: doc.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHP_VIRTUAL_FOLDER     = doc
 
 # If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
 # filter to add. For more information please see Qt Help Project / Custom
 # Filters (see:
 # https://doc.qt.io/archives/qt-4.8/qthelpproject.html#custom-filters).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHP_CUST_FILTER_NAME   =
 
 # The QHP_CUST_FILTER_ATTRS tag specifies the list of the attributes of the
 # custom filter to add. For more information please see Qt Help Project / Custom
 # Filters (see:
 # https://doc.qt.io/archives/qt-4.8/qthelpproject.html#custom-filters).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHP_CUST_FILTER_ATTRS  =
 
 # The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
 # project's filter section matches. Qt Help Project / Filter Attributes (see:
 # https://doc.qt.io/archives/qt-4.8/qthelpproject.html#filter-attributes).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHP_SECT_FILTER_ATTRS  =
 
 # The QHG_LOCATION tag can be used to specify the location (absolute path
 # including file name) of Qt's qhelpgenerator. If non-empty doxygen will try to
 # run qhelpgenerator on the generated .qhp file.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHG_LOCATION           =
 
 # If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files will be
 # generated, together with the HTML files, they form an Eclipse help plugin. To
 # install this plugin and make it available under the help contents menu in
 # Eclipse, the contents of the directory containing the HTML and XML files needs
 # to be copied into the plugins directory of eclipse. The name of the directory
 # within the plugins directory should be the same as the ECLIPSE_DOC_ID value.
 # After copying Eclipse needs to be restarted before the help appears.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 GENERATE_ECLIPSEHELP   = NO
 
 # A unique identifier for the Eclipse help plugin. When installing the plugin
 # the directory name containing the HTML and XML files should also have this
 # name. Each documentation set should have its own identifier.
 # The default value is: org.doxygen.Project.
 # This tag requires that the tag GENERATE_ECLIPSEHELP is set to YES.
 
 ECLIPSE_DOC_ID         = org.doxygen.Project
 
 # If you want full control over the layout of the generated HTML pages it might
 # be necessary to disable the index and replace it with your own. The
 # DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) at top
 # of each HTML page. A value of NO enables the index and the value YES disables
 # it. Since the tabs in the index contain the same information as the navigation
 # tree, you can set this option to YES if you also set GENERATE_TREEVIEW to YES.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 DISABLE_INDEX          = NO
 
 # The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
 # structure should be generated to display hierarchical information. If the tag
 # value is set to YES, a side panel will be generated containing a tree-like
 # index structure (just like the one that is generated for HTML Help). For this
 # to work a browser that supports JavaScript, DHTML, CSS and frames is required
 # (i.e. any modern browser). Windows users are probably better off using the
 # HTML help feature. Via custom style sheets (see HTML_EXTRA_STYLESHEET) one can
 # further fine-tune the look of the index. As an example, the default style
 # sheet generated by doxygen has an example that shows how to put an image at
 # the root of the tree instead of the PROJECT_NAME. Since the tree basically has
 # the same information as the tab index, you could consider setting
 # DISABLE_INDEX to YES when enabling this option.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 GENERATE_TREEVIEW      = YES
 
 # The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
 # doxygen will group on one line in the generated HTML documentation.
 #
 # Note that a value of 0 will completely suppress the enum values from appearing
 # in the overview section.
 # Minimum value: 0, maximum value: 20, default value: 4.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 ENUM_VALUES_PER_LINE   = 4
 
 # If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be used
 # to set the initial width (in pixels) of the frame in which the tree is shown.
 # Minimum value: 0, maximum value: 1500, default value: 250.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 TREEVIEW_WIDTH         = 250
 
 # If the EXT_LINKS_IN_WINDOW option is set to YES, doxygen will open links to
 # external symbols imported via tag files in a separate window.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 EXT_LINKS_IN_WINDOW    = NO
 
 # If the HTML_FORMULA_FORMAT option is set to svg, doxygen will use the pdf2svg
 # tool (see https://github.com/dawbarton/pdf2svg) or inkscape (see
 # https://inkscape.org) to generate formulas as SVG images instead of PNGs for
 # the HTML output. These images will generally look nicer at scaled resolutions.
 # Possible values are: png (the default) and svg (looks nicer but requires the
 # pdf2svg or inkscape tool).
 # The default value is: png.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_FORMULA_FORMAT    = png
 
 # Use this tag to change the font size of LaTeX formulas included as images in
 # the HTML documentation. When you change the font size after a successful
 # doxygen run you need to manually remove any form_*.png images from the HTML
 # output directory to force them to be regenerated.
 # Minimum value: 8, maximum value: 50, default value: 10.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 FORMULA_FONTSIZE       = 10
 
 # Use the FORMULA_TRANSPARENT tag to determine whether or not the images
 # generated for formulas are transparent PNGs. Transparent PNGs are not
 # supported properly for IE 6.0, but are supported on all modern browsers.
 #
 # Note that when changing this option you need to delete any form_*.png files in
 # the HTML output directory before the changes have effect.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 FORMULA_TRANSPARENT    = YES
 
 # The FORMULA_MACROFILE can contain LaTeX \newcommand and \renewcommand commands
 # to create new LaTeX commands to be used in formulas as building blocks. See
 # the section "Including formulas" for details.
 
 FORMULA_MACROFILE      =
 
 # Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
 # https://www.mathjax.org) which uses client side JavaScript for the rendering
 # instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
 # installed or if you want to formulas look prettier in the HTML output. When
 # enabled you may also need to install MathJax separately and configure the path
 # to it using the MATHJAX_RELPATH option.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 USE_MATHJAX            = NO
 
 # When MathJax is enabled you can set the default output format to be used for
 # the MathJax output. See the MathJax site (see:
 # http://docs.mathjax.org/en/v2.7-latest/output.html) for more details.
 # Possible values are: HTML-CSS (which is slower, but has the best
 # compatibility), NativeMML (i.e. MathML) and SVG.
 # The default value is: HTML-CSS.
 # This tag requires that the tag USE_MATHJAX is set to YES.
 
 MATHJAX_FORMAT         = HTML-CSS
 
 # When MathJax is enabled you need to specify the location relative to the HTML
 # output directory using the MATHJAX_RELPATH option. The destination directory
 # should contain the MathJax.js script. For instance, if the mathjax directory
 # is located at the same level as the HTML output directory, then
 # MATHJAX_RELPATH should be ../mathjax. The default value points to the MathJax
 # Content Delivery Network so you can quickly see the result without installing
 # MathJax. However, it is strongly recommended to install a local copy of
 # MathJax from https://www.mathjax.org before deployment.
 # The default value is: https://cdn.jsdelivr.net/npm/mathjax@2.
 # This tag requires that the tag USE_MATHJAX is set to YES.
 
 MATHJAX_RELPATH        = https://cdn.jsdelivr.net/npm/mathjax@2
 
 # The MATHJAX_EXTENSIONS tag can be used to specify one or more MathJax
 # extension names that should be enabled during MathJax rendering. For example
 # MATHJAX_EXTENSIONS = TeX/AMSmath TeX/AMSsymbols
 # This tag requires that the tag USE_MATHJAX is set to YES.
 
 MATHJAX_EXTENSIONS     =
 
 # The MATHJAX_CODEFILE tag can be used to specify a file with javascript pieces
 # of code that will be used on startup of the MathJax code. See the MathJax site
 # (see:
 # http://docs.mathjax.org/en/v2.7-latest/output.html) for more details. For an
 # example see the documentation.
 # This tag requires that the tag USE_MATHJAX is set to YES.
 
 MATHJAX_CODEFILE       =
 
 # When the SEARCHENGINE tag is enabled doxygen will generate a search box for
 # the HTML output. The underlying search engine uses javascript and DHTML and
 # should work on any modern browser. Note that when using HTML help
 # (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets (GENERATE_DOCSET)
 # there is already a search function so this one should typically be disabled.
 # For large projects the javascript based search engine can be slow, then
 # enabling SERVER_BASED_SEARCH may provide a better solution. It is possible to
 # search using the keyboard; to jump to the search box use <access key> + S
 # (what the <access key> is depends on the OS and browser, but it is typically
 # <CTRL>, <ALT>/<option>, or both). Inside the search box use the <cursor down
 # key> to jump into the search results window, the results can be navigated
 # using the <cursor keys>. Press <Enter> to select an item or <escape> to cancel
 # the search. The filter options can be selected when the cursor is inside the
 # search box by pressing <Shift>+<cursor down>. Also here use the <cursor keys>
 # to select a filter and <Enter> or <escape> to activate or cancel the filter
 # option.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 SEARCHENGINE           = YES
 
 # When the SERVER_BASED_SEARCH tag is enabled the search engine will be
 # implemented using a web server instead of a web client using JavaScript. There
 # are two flavors of web server based searching depending on the EXTERNAL_SEARCH
 # setting. When disabled, doxygen will generate a PHP script for searching and
 # an index file used by the script. When EXTERNAL_SEARCH is enabled the indexing
 # and searching needs to be provided by external tools. See the section
 # "External Indexing and Searching" for details.
 # The default value is: NO.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
 SERVER_BASED_SEARCH    = NO
 
 # When EXTERNAL_SEARCH tag is enabled doxygen will no longer generate the PHP
 # script for searching. Instead the search results are written to an XML file
 # which needs to be processed by an external indexer. Doxygen will invoke an
 # external search engine pointed to by the SEARCHENGINE_URL option to obtain the
 # search results.
 #
 # Doxygen ships with an example indexer (doxyindexer) and search engine
 # (doxysearch.cgi) which are based on the open source search engine library
 # Xapian (see:
 # https://xapian.org/).
 #
 # See the section "External Indexing and Searching" for details.
 # The default value is: NO.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
 EXTERNAL_SEARCH        = NO
 
 # The SEARCHENGINE_URL should point to a search engine hosted by a web server
 # which will return the search results when EXTERNAL_SEARCH is enabled.
 #
 # Doxygen ships with an example indexer (doxyindexer) and search engine
 # (doxysearch.cgi) which are based on the open source search engine library
 # Xapian (see:
 # https://xapian.org/). See the section "External Indexing and Searching" for
 # details.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
 SEARCHENGINE_URL       =
 
 # When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
 # search data is written to a file for indexing by an external tool. With the
 # SEARCHDATA_FILE tag the name of this file can be specified.
 # The default file is: searchdata.xml.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
 SEARCHDATA_FILE        = searchdata.xml
 
 # When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the
 # EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
 # useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
 # projects and redirect the results back to the right project.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
 EXTERNAL_SEARCH_ID     =
 
 # The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
 # projects other than the one defined by this configuration file, but that are
 # all added to the same external search index. Each project needs to have a
 # unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id of
 # to a relative location where the documentation can be found. The format is:
 # EXTRA_SEARCH_MAPPINGS = tagname1=loc1 tagname2=loc2 ...
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
 EXTRA_SEARCH_MAPPINGS  =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the LaTeX output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
 # The default value is: YES.
 
 GENERATE_LATEX         = NO
 
 # The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
 # it.
 # The default directory is: latex.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_OUTPUT           = latex
 
 # The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
 # invoked.
 #
 # Note that when not enabling USE_PDFLATEX the default is latex when enabling
 # USE_PDFLATEX the default is pdflatex and when in the later case latex is
 # chosen this is overwritten by pdflatex. For specific output languages the
 # default can have been set differently, this depends on the implementation of
 # the output language.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_CMD_NAME         = latex
 
 # The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate
 # index for LaTeX.
 # Note: This tag is used in the Makefile / make.bat.
 # See also: LATEX_MAKEINDEX_CMD for the part in the generated output file
 # (.tex).
 # The default file is: makeindex.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 MAKEINDEX_CMD_NAME     = makeindex
 
 # The LATEX_MAKEINDEX_CMD tag can be used to specify the command name to
 # generate index for LaTeX. In case there is no backslash (\) as first character
 # it will be automatically added in the LaTeX code.
 # Note: This tag is used in the generated output file (.tex).
 # See also: MAKEINDEX_CMD_NAME for the part in the Makefile / make.bat.
 # The default value is: makeindex.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_MAKEINDEX_CMD    = makeindex
 
 # If the COMPACT_LATEX tag is set to YES, doxygen generates more compact LaTeX
 # documents. This may be useful for small projects and may help to save some
 # trees in general.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 COMPACT_LATEX          = YES
 
 # The PAPER_TYPE tag can be used to set the paper type that is used by the
 # printer.
 # Possible values are: a4 (210 x 297 mm), letter (8.5 x 11 inches), legal (8.5 x
 # 14 inches) and executive (7.25 x 10.5 inches).
 # The default value is: a4.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 PAPER_TYPE             = a4
 
 # The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
 # that should be included in the LaTeX output. The package can be specified just
 # by its name or with the correct syntax as to be used with the LaTeX
 # \usepackage command. To get the times font for instance you can specify :
 # EXTRA_PACKAGES=times or EXTRA_PACKAGES={times}
 # To use the option intlimits with the amsmath package you can specify:
 # EXTRA_PACKAGES=[intlimits]{amsmath}
 # If left blank no extra packages will be included.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 EXTRA_PACKAGES         =
 
 # The LATEX_HEADER tag can be used to specify a personal LaTeX header for the
 # generated LaTeX document. The header should contain everything until the first
 # chapter. If it is left blank doxygen will generate a standard header. See
 # section "Doxygen usage" for information on how to let doxygen write the
 # default header to a separate file.
 #
 # Note: Only use a user-defined header if you know what you are doing! The
 # following commands have a special meaning inside the header: $title,
 # $datetime, $date, $doxygenversion, $projectname, $projectnumber,
 # $projectbrief, $projectlogo. Doxygen will replace $title with the empty
 # string, for the replacement values of the other commands the user is referred
 # to HTML_HEADER.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_HEADER           =
 
 # The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for the
 # generated LaTeX document. The footer should contain everything after the last
 # chapter. If it is left blank doxygen will generate a standard footer. See
 # LATEX_HEADER for more information on how to generate a default footer and what
 # special commands can be used inside the footer.
 #
 # Note: Only use a user-defined footer if you know what you are doing!
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_FOOTER           =
 
 # The LATEX_EXTRA_STYLESHEET tag can be used to specify additional user-defined
 # LaTeX style sheets that are included after the standard style sheets created
 # by doxygen. Using this option one can overrule certain style aspects. Doxygen
 # will copy the style sheet files to the output directory.
 # Note: The order of the extra style sheet files is of importance (e.g. the last
 # style sheet in the list overrules the setting of the previous ones in the
 # list).
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_EXTRA_STYLESHEET =
 
 # The LATEX_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the LATEX_OUTPUT output
 # directory. Note that the files will be copied as-is; there are no commands or
 # markers available.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_EXTRA_FILES      =
 
 # If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated is
 # prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will
 # contain links (just like the HTML output) instead of page references. This
 # makes the output suitable for online browsing using a PDF viewer.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 PDF_HYPERLINKS         = YES
 
 # If the USE_PDFLATEX tag is set to YES, doxygen will use the engine as
 # specified with LATEX_CMD_NAME to generate the PDF file directly from the LaTeX
 # files. Set this option to YES, to get a higher quality PDF documentation.
 #
 # See also section LATEX_CMD_NAME for selecting the engine.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 USE_PDFLATEX           = YES
 
 # If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \batchmode
 # command to the generated LaTeX files. This will instruct LaTeX to keep running
 # if errors occur, instead of asking the user for help. This option is also used
 # when generating formulas in HTML.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_BATCHMODE        = NO
 
 # If the LATEX_HIDE_INDICES tag is set to YES then doxygen will not include the
 # index chapters (such as File Index, Compound Index, etc.) in the output.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_HIDE_INDICES     = NO
 
 # The LATEX_BIB_STYLE tag can be used to specify the style to use for the
 # bibliography, e.g. plainnat, or ieeetr. See
 # https://en.wikipedia.org/wiki/BibTeX and \cite for more info.
 # The default value is: plain.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_BIB_STYLE        = plain
 
 # If the LATEX_TIMESTAMP tag is set to YES then the footer of each generated
 # page will contain the date and time when the page was generated. Setting this
 # to NO can help when comparing the output of multiple runs.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_TIMESTAMP        = NO
 
 # The LATEX_EMOJI_DIRECTORY tag is used to specify the (relative or absolute)
 # path from which the emoji images will be read. If a relative path is entered,
 # it will be relative to the LATEX_OUTPUT directory. If left blank the
 # LATEX_OUTPUT directory will be used.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_EMOJI_DIRECTORY  =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the RTF output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_RTF tag is set to YES, doxygen will generate RTF output. The
 # RTF output is optimized for Word 97 and may not look too pretty with other RTF
 # readers/editors.
 # The default value is: NO.
 
 GENERATE_RTF           = NO
 
 # The RTF_OUTPUT tag is used to specify where the RTF docs will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
 # it.
 # The default directory is: rtf.
 # This tag requires that the tag GENERATE_RTF is set to YES.
 
 RTF_OUTPUT             = rtf
 
 # If the COMPACT_RTF tag is set to YES, doxygen generates more compact RTF
 # documents. This may be useful for small projects and may help to save some
 # trees in general.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_RTF is set to YES.
 
 COMPACT_RTF            = YES
 
 # If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated will
 # contain hyperlink fields. The RTF file will contain links (just like the HTML
 # output) instead of page references. This makes the output suitable for online
 # browsing using Word or some other Word compatible readers that support those
 # fields.
 #
 # Note: WordPad (write) and others do not support links.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_RTF is set to YES.
 
 RTF_HYPERLINKS         = NO
 
 # Load stylesheet definitions from file. Syntax is similar to doxygen's
 # configuration file, i.e. a series of assignments. You only have to provide
 # replacements, missing definitions are set to their default value.
 #
 # See also section "Doxygen usage" for information on how to generate the
 # default style sheet that doxygen normally uses.
 # This tag requires that the tag GENERATE_RTF is set to YES.
 
 RTF_STYLESHEET_FILE    =
 
 # Set optional variables used in the generation of an RTF document. Syntax is
 # similar to doxygen's configuration file. A template extensions file can be
 # generated using doxygen -e rtf extensionFile.
 # This tag requires that the tag GENERATE_RTF is set to YES.
 
 RTF_EXTENSIONS_FILE    =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the man page output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_MAN tag is set to YES, doxygen will generate man pages for
 # classes and files.
 # The default value is: NO.
 
 GENERATE_MAN           = NO
 
 # The MAN_OUTPUT tag is used to specify where the man pages will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
 # it. A directory man3 will be created inside the directory specified by
 # MAN_OUTPUT.
 # The default directory is: man.
 # This tag requires that the tag GENERATE_MAN is set to YES.
 
 MAN_OUTPUT             = man
 
 # The MAN_EXTENSION tag determines the extension that is added to the generated
 # man pages. In case the manual section does not start with a number, the number
 # 3 is prepended. The dot (.) at the beginning of the MAN_EXTENSION tag is
 # optional.
 # The default value is: .3.
 # This tag requires that the tag GENERATE_MAN is set to YES.
 
 MAN_EXTENSION          = .3
 
 # The MAN_SUBDIR tag determines the name of the directory created within
 # MAN_OUTPUT in which the man pages are placed. If defaults to man followed by
 # MAN_EXTENSION with the initial . removed.
 # This tag requires that the tag GENERATE_MAN is set to YES.
 
 MAN_SUBDIR             =
 
 # If the MAN_LINKS tag is set to YES and doxygen generates man output, then it
 # will generate one additional man file for each entity documented in the real
 # man page(s). These additional files only source the real man page, but without
 # them the man command would be unable to find the correct page.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_MAN is set to YES.
 
 MAN_LINKS              = NO
 
 #---------------------------------------------------------------------------
 # Configuration options related to the XML output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_XML tag is set to YES, doxygen will generate an XML file that
 # captures the structure of the code including all documentation.
 # The default value is: NO.
 
 GENERATE_XML           = NO
 
 # The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
 # it.
 # The default directory is: xml.
 # This tag requires that the tag GENERATE_XML is set to YES.
 
 XML_OUTPUT             = xml
 
 # If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
 # listings (including syntax highlighting and cross-referencing information) to
 # the XML output. Note that enabling this will significantly increase the size
 # of the XML output.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_XML is set to YES.
 
 XML_PROGRAMLISTING     = YES
 
 # If the XML_NS_MEMB_FILE_SCOPE tag is set to YES, doxygen will include
 # namespace members in file scope as well, matching the HTML output.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_XML is set to YES.
 
 XML_NS_MEMB_FILE_SCOPE = NO
 
 #---------------------------------------------------------------------------
 # Configuration options related to the DOCBOOK output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_DOCBOOK tag is set to YES, doxygen will generate Docbook files
 # that can be used to generate PDF.
 # The default value is: NO.
 
 GENERATE_DOCBOOK       = NO
 
 # The DOCBOOK_OUTPUT tag is used to specify where the Docbook pages will be put.
 # If a relative path is entered the value of OUTPUT_DIRECTORY will be put in
 # front of it.
 # The default directory is: docbook.
 # This tag requires that the tag GENERATE_DOCBOOK is set to YES.
 
 DOCBOOK_OUTPUT         = docbook
 
 #---------------------------------------------------------------------------
 # Configuration options for the AutoGen Definitions output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_AUTOGEN_DEF tag is set to YES, doxygen will generate an
 # AutoGen Definitions (see http://autogen.sourceforge.net/) file that captures
 # the structure of the code including all documentation. Note that this feature
 # is still experimental and incomplete at the moment.
 # The default value is: NO.
 
 GENERATE_AUTOGEN_DEF   = NO
 
 #---------------------------------------------------------------------------
 # Configuration options related to the Perl module output
 #---------------------------------------------------------------------------
 
 # If the GENERATE_PERLMOD tag is set to YES, doxygen will generate a Perl module
 # file that captures the structure of the code including all documentation.
 #
 # Note that this feature is still experimental and incomplete at the moment.
 # The default value is: NO.
 
 GENERATE_PERLMOD       = NO
 
 # If the PERLMOD_LATEX tag is set to YES, doxygen will generate the necessary
 # Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI
 # output from the Perl module output.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_PERLMOD is set to YES.
 
 PERLMOD_LATEX          = NO
 
 # If the PERLMOD_PRETTY tag is set to YES, the Perl module output will be nicely
 # formatted so it can be parsed by a human reader. This is useful if you want to
 # understand what is going on. On the other hand, if this tag is set to NO, the
 # size of the Perl module output will be much smaller and Perl will parse it
 # just the same.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_PERLMOD is set to YES.
 
 PERLMOD_PRETTY         = YES
 
 # The names of the make variables in the generated doxyrules.make file are
 # prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. This is useful
 # so different doxyrules.make files included by the same Makefile don't
 # overwrite each other's variables.
 # This tag requires that the tag GENERATE_PERLMOD is set to YES.
 
 PERLMOD_MAKEVAR_PREFIX =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the preprocessor
 #---------------------------------------------------------------------------
 
 # If the ENABLE_PREPROCESSING tag is set to YES, doxygen will evaluate all
 # C-preprocessor directives found in the sources and include files.
 # The default value is: YES.
 
 ENABLE_PREPROCESSING   = YES
 
 # If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
 # in the source code. If set to NO, only conditional compilation will be
 # performed. Macro expansion can be done in a controlled way by setting
 # EXPAND_ONLY_PREDEF to YES.
 # The default value is: NO.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 MACRO_EXPANSION        = YES
 
 # If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
 # the macro expansion is limited to the macros specified with the PREDEFINED and
 # EXPAND_AS_DEFINED tags.
 # The default value is: NO.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 EXPAND_ONLY_PREDEF     = NO
 
 # If the SEARCH_INCLUDES tag is set to YES, the include files in the
 # INCLUDE_PATH will be searched if a #include is found.
 # The default value is: YES.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 SEARCH_INCLUDES        = YES
 
 # The INCLUDE_PATH tag can be used to specify one or more directories that
 # contain include files that are not input files but should be processed by the
 # preprocessor.
 # This tag requires that the tag SEARCH_INCLUDES is set to YES.
 
 INCLUDE_PATH           =
 
 # You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
 # patterns (like *.h and *.hpp) to filter out the header-files in the
 # directories. If left blank, the patterns specified with FILE_PATTERNS will be
 # used.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 INCLUDE_FILE_PATTERNS  =
 
 # The PREDEFINED tag can be used to specify one or more macro names that are
 # defined before the preprocessor is started (similar to the -D option of e.g.
 # gcc). The argument of the tag is a list of macros of the form: name or
 # name=definition (no spaces). If the definition and the "=" are omitted, "=1"
 # is assumed. To prevent a macro definition from being undefined via #undef or
 # recursively expanded use the := operator instead of the = operator.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 PREDEFINED             =
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The
 # macro definition that is found in the sources will be used. Use the PREDEFINED
 # tag if you want to use a different macro definition that overrules the
 # definition found in the source code.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 EXPAND_AS_DEFINED      =
 
 # If the SKIP_FUNCTION_MACROS tag is set to YES then doxygen's preprocessor will
 # remove all references to function-like macros that are alone on a line, have
 # an all uppercase name, and do not end with a semicolon. Such function macros
 # are typically used for boiler-plate code, and will confuse the parser if not
 # removed.
 # The default value is: YES.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 SKIP_FUNCTION_MACROS   = YES
 
 #---------------------------------------------------------------------------
 # Configuration options related to external references
 #---------------------------------------------------------------------------
 
 # The TAGFILES tag can be used to specify one or more tag files. For each tag
 # file the location of the external documentation should be added. The format of
 # a tag file without this location is as follows:
 # TAGFILES = file1 file2 ...
 # Adding location for the tag files is done as follows:
 # TAGFILES = file1=loc1 "file2 = loc2" ...
 # where loc1 and loc2 can be relative or absolute paths or URLs. See the
 # section "Linking to external documentation" for more information about the use
 # of tag files.
 # Note: Each tag file must have a unique name (where the name does NOT include
 # the path). If a tag file is not located in the directory in which doxygen is
 # run, you must also specify the path to the tagfile here.
 
 TAGFILES               = ../../contrib/gnunet.tag ../../contrib/microhttpd.tag ../../contrib/taler-exchange.tag
 
 # When a file name is specified after GENERATE_TAGFILE, doxygen will create a
 # tag file that is based on the input files it reads. See section "Linking to
 # external documentation" for more information about the usage of tag files.
 
 GENERATE_TAGFILE       = sync.tag
 
 # If the ALLEXTERNALS tag is set to YES, all external class will be listed in
 # the class index. If set to NO, only the inherited external classes will be
 # listed.
 # The default value is: NO.
 
 ALLEXTERNALS           = NO
 
 # If the EXTERNAL_GROUPS tag is set to YES, all external groups will be listed
 # in the modules index. If set to NO, only the current project's groups will be
 # listed.
 # The default value is: YES.
 
 EXTERNAL_GROUPS        = YES
 
 # If the EXTERNAL_PAGES tag is set to YES, all external pages will be listed in
 # the related pages index. If set to NO, only the current project's pages will
 # be listed.
 # The default value is: YES.
 
 EXTERNAL_PAGES         = YES
 
 #---------------------------------------------------------------------------
 # Configuration options related to the dot tool
 #---------------------------------------------------------------------------
 
 # You can include diagrams made with dia in doxygen documentation. Doxygen will
 # then run dia to produce the diagram and insert it in the documentation. The
 # DIA_PATH tag allows you to specify the directory where the dia binary resides.
 # If left empty dia is assumed to be found in the default search path.
 
 DIA_PATH               =
 
 # If set to YES the inheritance and collaboration graphs will hide inheritance
 # and usage relations if the target is undocumented or is not a class.
 # The default value is: YES.
 
 HIDE_UNDOC_RELATIONS   = YES
 
 # If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
 # available from the path. This tool is part of Graphviz (see:
 # http://www.graphviz.org/), a graph visualization toolkit from AT&T and Lucent
 # Bell Labs. The other options in this section have no effect if this option is
 # set to NO
 # The default value is: YES.
 
 HAVE_DOT               = YES
 
 # The DOT_NUM_THREADS specifies the number of dot invocations doxygen is allowed
 # to run in parallel. When set to 0 doxygen will base this on the number of
 # processors available in the system. You can set it explicitly to a value
 # larger than 0 to get control over the balance between CPU load and processing
 # speed.
 # Minimum value: 0, maximum value: 32, default value: 0.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_NUM_THREADS        = 0
 
 # When you want a differently looking font in the dot files that doxygen
 # generates you can specify the font name using DOT_FONTNAME. You need to make
 # sure dot is able to find the font, which can be done by putting it in a
 # standard location or by setting the DOTFONTPATH environment variable or by
 # setting DOT_FONTPATH to the directory containing the font.
 # The default value is: Helvetica.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_FONTNAME           = Helvetica
 
 # The DOT_FONTSIZE tag can be used to set the size (in points) of the font of
 # dot graphs.
 # Minimum value: 4, maximum value: 24, default value: 10.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_FONTSIZE           = 10
 
 # By default doxygen will tell dot to use the default font as specified with
 # DOT_FONTNAME. If you specify a different font using DOT_FONTNAME you can set
 # the path where dot can find it using this tag.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_FONTPATH           =
 
 # If the CLASS_GRAPH tag is set to YES then doxygen will generate a graph for
 # each documented class showing the direct and indirect inheritance relations.
 # Setting this tag to YES will force the CLASS_DIAGRAMS tag to NO.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 CLASS_GRAPH            = NO
 
 # If the COLLABORATION_GRAPH tag is set to YES then doxygen will generate a
 # graph for each documented class showing the direct and indirect implementation
 # dependencies (inheritance, containment, and class references variables) of the
 # class with other documented classes.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 COLLABORATION_GRAPH    = NO
 
 # If the GROUP_GRAPHS tag is set to YES then doxygen will generate a graph for
 # groups, showing the direct groups dependencies.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 GROUP_GRAPHS           = NO
 
 # If the UML_LOOK tag is set to YES, doxygen will generate inheritance and
 # collaboration diagrams in a style similar to the OMG's Unified Modeling
 # Language.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 UML_LOOK               = NO
 
 # If the UML_LOOK tag is enabled, the fields and methods are shown inside the
 # class node. If there are many fields or methods and many nodes the graph may
 # become too big to be useful. The UML_LIMIT_NUM_FIELDS threshold limits the
 # number of items for each type to make the size more manageable. Set this to 0
 # for no limit. Note that the threshold may be exceeded by 50% before the limit
 # is enforced. So when you set the threshold to 10, up to 15 fields may appear,
 # but if the number exceeds 15, the total amount of fields shown is limited to
 # 10.
 # Minimum value: 0, maximum value: 100, default value: 10.
 # This tag requires that the tag UML_LOOK is set to YES.
 
 UML_LIMIT_NUM_FIELDS   = 10
 
 # If the DOT_UML_DETAILS tag is set to NO, doxygen will show attributes and
 # methods without types and arguments in the UML graphs. If the DOT_UML_DETAILS
 # tag is set to YES, doxygen will add type and arguments for attributes and
 # methods in the UML graphs. If the DOT_UML_DETAILS tag is set to NONE, doxygen
 # will not generate fields with class member information in the UML graphs. The
 # class diagrams will look similar to the default class diagrams but using UML
 # notation for the relationships.
 # Possible values are: NO, YES and NONE.
 # The default value is: NO.
 # This tag requires that the tag UML_LOOK is set to YES.
 
 DOT_UML_DETAILS        = NO
 
 # The DOT_WRAP_THRESHOLD tag can be used to set the maximum number of characters
 # to display on a single line. If the actual line length exceeds this threshold
 # significantly it will wrapped across multiple lines. Some heuristics are apply
 # to avoid ugly line breaks.
 # Minimum value: 0, maximum value: 1000, default value: 17.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_WRAP_THRESHOLD     = 17
 
 # If the TEMPLATE_RELATIONS tag is set to YES then the inheritance and
 # collaboration graphs will show the relations between templates and their
 # instances.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 TEMPLATE_RELATIONS     = NO
 
 # If the INCLUDE_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are set to
 # YES then doxygen will generate a graph for each documented file showing the
 # direct and indirect include dependencies of the file with other documented
 # files.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 INCLUDE_GRAPH          = YES
 
 # If the INCLUDED_BY_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are
 # set to YES then doxygen will generate a graph for each documented file showing
 # the direct and indirect include dependencies of the file with other documented
 # files.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 INCLUDED_BY_GRAPH      = YES
 
 # If the CALL_GRAPH tag is set to YES then doxygen will generate a call
 # dependency graph for every global function or class method.
 #
 # Note that enabling this option will significantly increase the time of a run.
 # So in most cases it will be better to enable call graphs for selected
 # functions only using the \callgraph command. Disabling a call graph can be
 # accomplished by means of the command \hidecallgraph.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 CALL_GRAPH             = YES
 
 # If the CALLER_GRAPH tag is set to YES then doxygen will generate a caller
 # dependency graph for every global function or class method.
 #
 # Note that enabling this option will significantly increase the time of a run.
 # So in most cases it will be better to enable caller graphs for selected
 # functions only using the \callergraph command. Disabling a caller graph can be
 # accomplished by means of the command \hidecallergraph.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 CALLER_GRAPH           = YES
 
 # If the GRAPHICAL_HIERARCHY tag is set to YES then doxygen will graphical
 # hierarchy of all classes instead of a textual one.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 GRAPHICAL_HIERARCHY    = NO
 
 # If the DIRECTORY_GRAPH tag is set to YES then doxygen will show the
 # dependencies a directory has on other directories in a graphical way. The
 # dependency relations are determined by the #include relations between the
 # files in the directories.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DIRECTORY_GRAPH        = YES
 
 # The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
 # generated by dot. For an explanation of the image formats see the section
 # output formats in the documentation of the dot tool (Graphviz (see:
 # http://www.graphviz.org/)).
 # Note: If you choose svg you need to set HTML_FILE_EXTENSION to xhtml in order
 # to make the SVG files visible in IE 9+ (other browsers do not have this
 # requirement).
 # Possible values are: png, png:cairo, png:cairo:cairo, png:cairo:gd, png:gd,
 # png:gd:gd, jpg, jpg:cairo, jpg:cairo:gd, jpg:gd, jpg:gd:gd, gif, gif:cairo,
 # gif:cairo:gd, gif:gd, gif:gd:gd, svg, png:gd, png:gd:gd, png:cairo,
 # png:cairo:gd, png:cairo:cairo, png:cairo:gdiplus, png:gdiplus and
 # png:gdiplus:gdiplus.
 # The default value is: png.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_IMAGE_FORMAT       = png
 
 # If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
 # enable generation of interactive SVG images that allow zooming and panning.
 #
 # Note that this requires a modern browser other than Internet Explorer. Tested
 # and working are Firefox, Chrome, Safari, and Opera.
 # Note: For IE 9+ you need to set HTML_FILE_EXTENSION to xhtml in order to make
 # the SVG files visible. Older versions of IE do not have SVG support.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 INTERACTIVE_SVG        = NO
 
 # The DOT_PATH tag can be used to specify the path where the dot tool can be
 # found. If left blank, it is assumed the dot tool can be found in the path.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_PATH               =
 
 # The DOTFILE_DIRS tag can be used to specify one or more directories that
 # contain dot files that are included in the documentation (see the \dotfile
 # command).
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOTFILE_DIRS           =
 
 # The MSCFILE_DIRS tag can be used to specify one or more directories that
 # contain msc files that are included in the documentation (see the \mscfile
 # command).
 
 MSCFILE_DIRS           =
 
 # The DIAFILE_DIRS tag can be used to specify one or more directories that
 # contain dia files that are included in the documentation (see the \diafile
 # command).
 
 DIAFILE_DIRS           =
 
 # When using plantuml, the PLANTUML_JAR_PATH tag should be used to specify the
 # path where java can find the plantuml.jar file. If left blank, it is assumed
 # PlantUML is not used or called during a preprocessing step. Doxygen will
 # generate a warning when it encounters a \startuml command in this case and
 # will not generate output for the diagram.
 
 PLANTUML_JAR_PATH      =
 
 # When using plantuml, the PLANTUML_CFG_FILE tag can be used to specify a
 # configuration file for plantuml.
 
 PLANTUML_CFG_FILE      =
 
 # When using plantuml, the specified paths are searched for files specified by
 # the !include statement in a plantuml block.
 
 PLANTUML_INCLUDE_PATH  =
 
 # The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of nodes
 # that will be shown in the graph. If the number of nodes in a graph becomes
 # larger than this value, doxygen will truncate the graph, which is visualized
 # by representing a node as a red box. Note that doxygen if the number of direct
 # children of the root node in a graph is already larger than
 # DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note that
 # the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
 # Minimum value: 0, maximum value: 10000, default value: 50.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_GRAPH_MAX_NODES    = 100
 
 # The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the graphs
 # generated by dot. A depth value of 3 means that only nodes reachable from the
 # root by following a path via at most 3 edges will be shown. Nodes that lay
 # further from the root node will be omitted. Note that setting this option to 1
 # or 2 may greatly reduce the computation time needed for large code bases. Also
 # note that the size of a graph can be further restricted by
 # DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
 # Minimum value: 0, maximum value: 1000, default value: 0.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 MAX_DOT_GRAPH_DEPTH    = 2
 
 # Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
 # background. This is disabled by default, because dot on Windows does not seem
 # to support this out of the box.
 #
 # Warning: Depending on the platform used, enabling this option may lead to
 # badly anti-aliased labels on the edges of a graph (i.e. they become hard to
 # read).
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_TRANSPARENT        = YES
 
 # Set the DOT_MULTI_TARGETS tag to YES to allow dot to generate multiple output
 # files in one run (i.e. multiple -o and -T options on the command line). This
 # makes dot run faster, but since only newer versions of dot (>1.8.10) support
 # this, this feature is disabled by default.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 DOT_MULTI_TARGETS      = NO
 
 # If the GENERATE_LEGEND tag is set to YES doxygen will generate a legend page
 # explaining the meaning of the various boxes and arrows in the dot generated
 # graphs.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
 GENERATE_LEGEND        = YES
 
 # If the DOT_CLEANUP tag is set to YES, doxygen will remove the intermediate
 # files that are used to generate the various graphs.
 #
 # Note: This setting is not only used for dot files but also for msc and
 # plantuml temporary files.
 # The default value is: YES.
 
 DOT_CLEANUP            = YES