def get_comment_query_session(self):
raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the comment query service.

        return: (osid.commenting.CommentQuerySession) - a
                ``CommentQuerySession``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_comment_query()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_comment_query()`` is ``true``.*