This class has a generic name but assumes it does indentation and looks like it would be difficult to extend with other subclasses than the existing IndentAction and ToggleCommentAction

Either rename it as "ActionThetIndentsAfterDoingSomethingElse" or refactor the functionality

Anyway, the core of the functionality must be moved to ErlangEngine, as we can't just call arbitrary erlang code (because the engine might be 100% Java)