+'ContentGetParserOutput': Customize parser output for a given content object,
+called by AbstractContent::getParserOutput. May be used to override the normal
+model-specific rendering of page content.
+$content: The Content to render
+$title: Title of the page, as context
+$revId: The revision ID, as context
+$options: ParserOptions for rendering. To avoid confusing the parser cache,
+the output can only depend on parameters provided to this hook function, not on global state.
+$generateHtml: boolean, indicating whether full HTML should be generated. If false,
+generation of HTML may be skipped, but other information should still be present in the
+ParserOutput object.
+&$output: ParserOutput, to manipulate or replace
+