Default options used in +yard doc+ command.
@return [CodeObjects::ExtraFileObject] the file object being rendered.
The +object+ key is not used so that a file may be rendered in the context of an object's namespace (for generating links).
@return [CodeObjects::Base] an extra item to send to a template that is not
the main rendered object
@return [Array<CodeObjects::Base>] the list of code objects to render
the templates with.
Generated with the Darkfish Rdoc Generator 2.