valid to access it.
setValid to mutate it.
Whether it is possible to load content from the underlying resource.
Find all matches in an editor for the given options.
the options for finding matches.
the list of matches.
Retrieves a line in a text document expressed as a one-based position.
Return selected text by Range or all text by default
Only this method can create an instance of
there should not be other calls to
It's a hack to dispatch close notification with an old language id; don't use it.