def __error_message(self,stanza):
fr=stanza.get_from()<EOL>key=fr.bare().as_unicode()<EOL>rs=self.rooms.get(key)<EOL>if not rs:<EOL><INDENT>return False<EOL><DEDENT>rs.process_error_message(stanza)<EOL>return True<EOL>
Process an error message from a MUC room.

        :Parameters:
            - `stanza`: the stanza received.
        :Types:
            - `stanza`: `Message`

        :return: `True` if the message was properly recognized as directed to
            one of the managed rooms, `False` otherwise.
        :returntype: `bool`