Parser
Indicates that the extension bundle is provided by a parser for markup format.
A parser may either provide a feature as a bundle to allow the user to disable it, e.g. support for raw content in the output format which might be security risk when entered by the user.
Another scenario is a parser that needs to supply custom renderers as its parsers produce AST nodes which are not known by the built-in renderers.
trait Singleton
trait Product
trait Mirror
trait Serializable
trait Product
trait Equals
trait BundleOrigin
class Object
trait Matchable
class Any
Parser.type