@abc.abstractmethod<EOL><INDENT>def new_member(self, group_id, member_id):<DEDENT>
pass<EOL>
The callback for notifications of new resource members.

        :param group_id: the ``Id`` of the ``Resource`` group
        :type group_id: ``osid.id.Id``
        :param member_id: the ``Id`` of the new ``Resource`` member
        :type member_id: ``osid.id.Id``


        *compliance: mandatory -- This method must be implemented.*