06 Functions

A function is a piece of dart code that performs a specific task. So a function can basically do anything that dart code can do.

A function can be used anywhere in an tag expression. Wherever that particular task should be performed.

An example of a function call: cos(pi) Should result in: -1

Parameters and Arguments

Function & Parameter & argument names:

• are case sensitive
• must start with a lower case letter, optionally followed by (lower or upper case) letters and or digits.
• conventions: use lowerCamelCase
• must be unique and does not match a other tag syntax

Parameters vs Arguments

• Parameters are the names used in the function definition.
• Arguments are the actual values passed when calling the function.

Parameters:

• A function can have zero or more parameters
• Parameters are defined as either mandatory or optional
• Optional parameters can have a default value

Arguments:

• Multiple arguments are separated with a comma, e.g. single argument: cos(pi) multiple arguments: volume(10,20,30)
• There are different types of arguments
  • Positional Arguments: These are passed in the order the function defines them. e.g.: volume(10, 20, 30)
  • Named Arguments: You can specify which parameter you're assigning a value to, regardless of order. e.g.: volume(l=30, h=10, w=20)
• Arguments can set a parameter only once
• You can mix positional arguments and named arguments, but positional arguments must come first
• Named arguments remove ambiguity: If you want to skip an optional argument or specify one out of order, you must name it explicitly

Argument values:

• must match the expected parameter type. e.g. area(length='hello', width='world') will result in a failure
• may be a tag expression such as a variable, constant, operation, function, or combination. e.g. cos(2*pi)

Custom Functions

You can use prepackaged [template_engine] functions or add your own custom functions by manipulating the TemplateEngine.functionGroups field.
See Example.

Available Functions

Import Functions

importTemplate Function

description:	Imports, parses and renders a template file
return type:	IntermediateRenderResult
expression example:	{{importTemplate('test/src/parser/tag/expression/function/import/to_import.md.template')}}
code example:	import_template_test.dart
parameter:	source	String	mandatory	The project path of the template file

importPure Function

description:	Imports a file as is (without parsing and rendering)
return type:	String
expression example:	{{importPure('test/src/template_engine_template_example_test.dart')}}
code example:	import_pure_test.dart
parameter:	source	String	mandatory	The project path of the file. This path can be a absolute or relative file path or URI.

importCode Function

description:	A markdown code block that imports a code file.
return type:	Object
expression example:	{{importCode('test/src/template_engine_template_example_test.dart')}}
parameter:	source	String	mandatory	The project path of the code file to importThis path can be a absolute or relative file path or URI.
parameter:	language	String	optional (default="")	You can specify the language to optimize syntax highlighting, e.g. html, dart, ruby
parameter:	sourceHeader	boolean	optional (default=true)	Adds the source path as a header

importDartCode Function

description:	A markdown code block that imports a dart code file.
return type:	Object
expression example:	{{importDartCode('test/src/template_engine_template_example_test.dart')}}
parameter:	source	String	mandatory	The project path of the dart code file to import.This path can be a absolute or relative file path or URI.
parameter:	sourceHeader	boolean	optional (default=true)	Adds the source path as a header

importDartDoc Function

description:	A markdown code block that imports dat documentation comments for a given library member from a dart code file.: /// will be removed. Text between [] in the Dart documentation could represent references. These references will be replaced to links if possible or nessasary. This is done in the following order: hyper links, e.g. Google links to pub.dev packages, e.g. [documentation_builder] links to dart members, e.g. [MyClass] or [myField] or [MyClass.myField] Note that tags have no place in dart documentation comments and will therefore not be resolved. Use references or links instead (see above)
return type:	Object
expression example:	{{ImportDartDoc('test/src/template_engine_template_example_test.dart')}}
parameter:	source	String	mandatory	A reference to a piece of your Dart source code. This could be anything from a whole dart file to one of its members. Format: <DartFilePath>#<DartMemberPath> (required) is a DartFilePath to a Dart file without dart extension, e.g. lib/my_library.dart #: the and are separated with a hash (optional) is a dot separated path to the member inside the Dart file, e.g.: constant name function name enum name class name extension name Examples: lib/my_library.dart lib/my_library.dart#myConstant lib/my_library.dart#myFunction lib/my_library.dart#MyEnum lib/my_library.dart#MyEnum.myValue lib/my_library.dart#MyClass lib/my_library.dart#MyClass.myFieldName lib/my_library.dart#MyClass.myFieldName.get lib/my_library.dart#MyClass.myFieldName.set lib/my_library.dart#MyClass.myMethod lib/my_library.dart#MyExtension lib/my_library.dart#MyExtension.myFieldName lib/my_library.dart#MyExtension.myFieldName.get lib/my_library.dart#MyExtension.myFieldName.set lib/my_library.dart#MyExtension.myMethod

importJson Function

description:	Imports a JSON file and decode it to a Map, which could be assigned it to a variable.
return type:	Map
expression example:	{{json=importJson('test/src/parser/tag/expression/function/import/person.json')}}{{json.person.child.name}}
code example:	import_json_test.dart
parameter:	source	String	mandatory	The project path of the JSON file. This path can be a absolute or relative file path or URI.

importXml Function

description:	Imports a XML file and decode it to a Map, which could be assigned it to a variable.
return type:	Map
expression example:	{{xml=importXml('test/src/parser/tag/expression/function/import/person.xml')}}{{xml.person.child.name}}
code example:	import_xml_test.dart
parameter:	source	String	mandatory	The project path of the XML file. This path can be a absolute or relative file path or URI.

importYaml Function

description:	Imports a YAML file and decode it to a Map, which could be assigned it to a variable.
return type:	Map
expression example:	{{yaml=importYaml('test/src/parser/tag/expression/function/import/person.yaml')}}{{yaml.person.child.name}}
code example:	import_yaml_test.dart
parameter:	source	String	mandatory	The project path of the YAML file. This path can be a absolute or relative file path or URI.

Generator Functions

license Function

description:	Creates a license text for the given type, year and copyright holder
return type:	String
expression example:	{{ license(type='type value', name='name value') }}
parameter:	type	String	mandatory	Type of license, currently supported: MIT, BSD3
parameter:	name	String	mandatory	Name of the copyright holder
parameter:	year	int	optional	Year of the copyright. It wil use the current year if not defined

tableOfContents Function

description:	Markdown table of content with links to all markdown chapters (e.g. # chapter, ## paragraph, ## sub paragraph) of a template file or all template files in a folder.
return type:	Object
expression example:	{{ tableOfContents('path value') }}
parameter:	path	String	mandatory	A relative project path (always with slash forward) to a template file (e.g.: doc/template/README.md.template) or a folder with template files (e.g.: doc/template/doc/wiki)
parameter:	includeFileLink	boolean	optional (default=true)	If the title links should be preceded with a link to the file
parameter:	gitHubWiki	boolean	optional (default=false)	Will remove the .md extension from the links so that they work correctly inside gitHub wiki pages

gitHubMileStones Function

description:	A markdown text of milestones on GitHub. You could use this for the CHANGELOG.md file.
return type:	Object
expression example:	{{gitHubMileStones('test/src/template_engine_template_example_test.dart')}}
parameter:	state	String	optional (default="all")	The state of the milestones, either: open, closed, all

Path Functions

templateSource Function

description:	Gives the relative path of the current template
return type:	String
expression example:	{{templateSource()}}
code example:	template_test.dart

inputPath Function

description:	Returns the path of the template file being used. Prefer to use this function over the 'templateSource' because 'inputPath' always resolves to a path
return type:	String
expression example:	{{inputPath()}} should render: doc/example.md

outputPath Function

description:	Returns the path of the file being created from the template
return type:	String
expression example:	{{outputPath()}} should render: doc/example.md

referenceUri Function

description:	Returns a URI of Creates a uri from an address.
return type:	Uri
expression example:	{{ referenceUri(???) }}
parameter:	ref	dynamic	mandatory	The ref (reference) can be: a Uri to something on the internet, e.g,: 'https://www.google.com' a package name on pub.dev, e.g.: 'documentation_builder' reference to a source file, e.g.: 'example/example.md' or 'lib/src/my_library.dart' a reference to dart library member, e.g.: 'lib/src/my_library.dart#MyClass.myField'

gitHubUri Function

description:	Returns a URI of a web page of your project on github.com
return type:	Uri
expression example:	{{ gitHubUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubWikiUri Function

description:	Returns a URI of a wiki page of your project on github.com
return type:	Uri
expression example:	{{ gitHubWikiUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubStarsUri Function

description:	Returns a URI of a stars page of your project on github.com
return type:	Uri
expression example:	{{ gitHubStarsUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubIssuesUri Function

description:	Returns a URI of an issue page of your project on github.com
return type:	Uri
expression example:	{{ gitHubIssuesUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubMilestonesUri Function

description:	Returns a URI of a milestone page of your project on github.com
return type:	Uri
expression example:	{{ gitHubMilestonesUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubReleasesUri Function

description:	Returns a URI of a releases page of your project on github.com
return type:	Uri
expression example:	{{ gitHubReleasesUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubPullRequestsUri Function

description:	Returns a URI of a pull request page of your project on github.com
return type:	Uri
expression example:	{{ gitHubPullRequestsUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

gitHubRawUri Function

description:	Returns a URI of a raw code page of your project on github.com
return type:	Uri
expression example:	{{ gitHubRawUri('suffix value') }}
parameter:	suffix	String	mandatory	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevUri Function

description:	Returns a URI of the home page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevChangeLogUri Function

description:	Returns a URI of the change log page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevChangeLogUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevVersionsUri Function

description:	Returns a URI of the version page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevVersionsUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevExampleUri Function

description:	Returns a URI of the example page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevExampleUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevInstallUri Function

description:	Returns a URI of the install page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevInstallUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevScoreUri Function

description:	Returns a URI of the score page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevScoreUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

pubDevLicenseUri Function

description:	Returns a URI of the license page of your project on pub.dev
return type:	Uri
expression example:	{{ pubDevLicenseUri() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)

Link Functions

referenceLink Function

description:	Returns a markdown hyperlink of Creates a uri from an address.
return type:	MarkDownLink
expression example:	{{ referenceLink(???) }}
parameter:	ref	dynamic	mandatory	The ref (reference) can be: a Uri to something on the internet, e.g,: 'https://www.google.com' a package name on pub.dev, e.g.: 'documentation_builder' reference to a source file, e.g.: 'example/example.md' or 'lib/src/my_library.dart' a reference to dart library member, e.g.: 'lib/src/my_library.dart#MyClass.myField'
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubLink Function

description:	Returns a markdown hyperlink of a web page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubWikiLink Function

description:	Returns a markdown hyperlink of a wiki page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubWikiLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubStarsLink Function

description:	Returns a markdown hyperlink of a stars page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubStarsLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubIssuesLink Function

description:	Returns a markdown hyperlink of an issue page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubIssuesLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubMilestonesLink Function

description:	Returns a markdown hyperlink of a milestone page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubMilestonesLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubReleasesLink Function

description:	Returns a markdown hyperlink of a releases page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubReleasesLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubPullRequestsLink Function

description:	Returns a markdown hyperlink of a pull request page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubPullRequestsLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

gitHubRawLink Function

description:	Returns a markdown hyperlink of a raw code page of your project on github.com
return type:	MarkDownLink
expression example:	{{ gitHubRawLink('suffix value') }}
parameter:	suffix	String	mandatory	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevLink Function

description:	Returns a markdown hyperlink of the home page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevChangeLogLink Function

description:	Returns a markdown hyperlink of the change log page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevChangeLogLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevVersionsLink Function

description:	Returns a markdown hyperlink of the version page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevVersionsLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevExampleLink Function

description:	Returns a markdown hyperlink of the example page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevExampleLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevInstallLink Function

description:	Returns a markdown hyperlink of the install page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevInstallLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevScoreLink Function

description:	Returns a markdown hyperlink of the score page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevScoreLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

pubDevLicenseLink Function

description:	Returns a markdown hyperlink of the license page of your project on pub.dev
return type:	MarkDownLink
expression example:	{{ pubDevLicenseLink() }}
parameter:	suffix	String	optional	A suffix to append to the URI (e.g. path, query, fragment, etc)
parameter:	text	String	optional	The text of the hyperlink. An appropriate text will be provided if no text is defined

Badge Functions

customBadge Function

description:	Creates markdown for a customizable badge image
return type:	String
expression example:	{{customBadge(tooltip='GitHub License' label='license' message='MIT' link='https://github.com/domain-centric/documentation_builder/blob/main/LICENSE')}} should render: [](https://github.com/domain-centric/documentation_builder/blob/main/LICENSE)
parameter:	toolTip	String	optional	This text becomes visible when hoovering over a badge
parameter:	label	String	mandatory	The label is the left text of the badge and is often lower case text
parameter:	message	String	mandatory	The label is the left message is the right text of the badge and can have a fill color
parameter:	color	String	optional (default="informational")	The message is the right text of the [Badge] and can have fill color. The color can be defined in different ways: As color name: brightgreen green yellowgreen yellow orange red blue lightgrey blueviolet As name success important critical informational (=default) inactive As code: ff69b4 9cf
parameter:	link	String	mandatory	A Uri that points to a web site page.

pubPackageBadge Function

description:	Creates markdown for a badge of an existing Dart or Flutter package on pub.dev
return type:	String
expression example:	{{ pubPackageBadge() }} should render: [](https://pub.dev/packages/documentation_builder)
parameter:	toolTip	String	optional (default="Pub Package")	This text becomes visible when hoovering over a badge

pubScoresBadge Function

description:	Creates markdown for a badge of the scores on pub.dev
return type:	String
expression example:	{{ pubScoresBadge() }} should render: [
parameter:	toolTip	String	optional (default="Pub Scores")	This text becomes visible when hoovering over a badge

allPubBadges Function

description:	Creates markdown for all pub.dev badges
return type:	Object
expression example:	{{ allPubBadges() }}

gitHubBadge Function

description:	Creates markdown for a badge of a project on github.com
return type:	Object
expression example:	{{ gitHubBadge() }} should render: [](https://github.com/domain-centric/documentation_builder)
parameter:	toolTip	String	optional (default="Project on github.com")	This text becomes visible when hoovering over a badge

gitHubWikiBadge Function

description:	Creates markdown for a badge of the Wiki pages of a project on GitHub.com
return type:	Object
expression example:	{{ gitHubWikiBadge() }} should render: [](https://github.com/domain-centric/documentation_builder/wiki)
parameter:	toolTip	String	optional (default="Project Wiki pages on github.com")	This text becomes visible when hoovering over a badge

gitHubStarsBadge Function

description:	Creates markdown for a badge with the amount of stars on github.com
return type:	Object
expression example:	{{ gitHubStarsBadge() }} should render: [](https://github.com/domain-centric/documentation_builder/stargazers)
parameter:	toolTip	String	optional (default="Stars ranking on github.com")	This text becomes visible when hoovering over a badge

gitHubIssuesBadge Function

description:	Creates markdown for a badge with the amount of open issues on github.com
return type:	Object
expression example:	{{ gitHubIssuesBadge() }} should render: [](https://github.com/domain-centric/documentation_builder/issues)
parameter:	toolTip	String	optional (default="Open issues on github.com")	This text becomes visible when hoovering over a badge

gitHubPullRequestsBadge Function

description:	Creates markdown for a badge with the amount of open pull requests on github.com
return type:	Object
expression example:	{{ gitHubPullRequestsBadge() }} should render: [](https://github.com/domain-centric/documentation_builder/pull)
parameter:	toolTip	String	optional (default="Open pull requests on github.com")	This text becomes visible when hoovering over a badge

gitHubLicenseBadge Function

description:	Creates markdown for a badge with the amount of open pull requests on github.com
return type:	Object
expression example:	{{ gitHubLicenseBadge() }} should render: [](https://github.com/domain-centric/documentation_builder/blob/main/LICENSE)
parameter:	toolTip	String	optional (default="Project License")	This text becomes visible when hoovering over a badge

allGitHubBadges Function

description:	Creates markdown for all github.com badges
return type:	Object
expression example:	{{ allGitHubBadges() }}

allPubGitHubBadges Function

description:	Creates markdown for all pub.dev and github.com badges
return type:	Object
expression example:	{{ allPubGitHubBadges() }}

Math Functions

exp Function

description:	Returns the natural exponent e, to the power of the value
return type:	number
expression example:	{{exp(7)}} should render: 1096.6331584284585
code example:	exp_test.dart
parameter:	value	number	mandatory

log Function

description:	Returns the natural logarithm of the value
return type:	number
expression example:	{{log(7)}} should render: 1.9459101490553132
code example:	log_test.dart
parameter:	value	number	mandatory

sin Function

description:	Returns the sine of the radians
return type:	number
expression example:	{{sin(7)}} should render: 0.6569865987187891
code example:	sin_test.dart
parameter:	radians	number	mandatory

asin Function

description:	Returns the values arc sine in radians
return type:	number
expression example:	{{asin(0.5)}} should render: 0.5235987755982989
code example:	asin_test.dart
parameter:	value	number	mandatory

cos Function

description:	Returns the cosine of the radians
return type:	number
expression example:	{{cos(7)}} should render: 0.7539022543433046
code example:	cos_test.dart
parameter:	radians	number	mandatory

acos Function

description:	Returns the values arc cosine in radians
return type:	number
expression example:	{{acos(0.5)}} should render: 1.0471975511965979
code example:	acos_test.dart
parameter:	value	number	mandatory

tan Function

description:	Returns the the tangent of the radians
return type:	number
expression example:	{{tan(7)}} should render: 0.8714479827243188
code example:	tan_test.dart
parameter:	radians	number	mandatory

atan Function

description:	Returns the values arc tangent in radians
return type:	number
expression example:	{{atan(0.5)}} should render: 0.4636476090008061
code example:	atan_test.dart
parameter:	value	number	mandatory

sqrt Function

description:	Returns the positive square root of the value.
return type:	number
expression example:	{{sqrt(9)}} should render: 3.0
code example:	sqrt_test.dart
parameter:	value	number	mandatory

round Function

description:	Returns the a rounded number.
return type:	number
expression example:	{{round(4.445)}} should render: 4
code example:	round_test.dart
parameter:	value	number	mandatory

String Functions

length Function

description:	Returns the length of a string
return type:	number
expression example:	{{length("Hello")}} should render: 5
code example:	length_test.dart
parameter:	string	String	mandatory

Documentation Functions

tagDocumentation Function

description:	Generates markdown documentation of all the tags within a TemplateEngine
return type:	String
expression example:	{{ tagDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title

dataTypeDocumentation Function

description:	Generates markdown documentation of all the data types that can be used within a ExpressionTag of a TemplateEngine
return type:	String
expression example:	{{ dataTypeDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title

constantDocumentation Function

description:	Generates markdown documentation of all the constants that can be used within a ExpressionTag of a TemplateEngine
return type:	String
expression example:	{{ constantDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title

variableDocumentation Function

description:	Generates markdown documentation of variables that can be used within a ExpressionTag of a TemplateEngine
return type:	String
expression example:	{{ variableDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title

functionDocumentation Function

description:	Generates markdown documentation of all the functions that can be used within a ExpressionTag of a TemplateEngine
return type:	String
expression example:	{{ functionDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title

operatorDocumentation Function

description:	Generates markdown documentation of all the operators that can be used within a ExpressionTag of a TemplateEngine
return type:	String
expression example:	{{ operatorDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title

exampleDocumentation Function

description:	Generates markdown documentation of all the examples. This could be used to generate example.md file.
return type:	String
expression example:	{{ exampleDocumentation() }}
parameter:	titleLevel	number	optional (default=1)	The level of the tag title