def size():
        """Return the number of participants in this group.

        @rtype: L{twisted.internet.defer.Deferred}
        @return: A Deferred which fires with an C{int} representing the
        number of participants in this group.
        """
Return the number of participants in this group.

        @rtype: L{twisted.internet.defer.Deferred}
        @return: A Deferred which fires with an C{int} representing the
        number of participants in this group.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/words/iwords.py