def get_resource_relationship_notification_session(self, resource_relationship_receiver=None, proxy=None):
if proxy is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the resource relationship notification service.

        arg:    resource_relationship_receiver
                (osid.resource.ResourceRelationshipReceiver): the
                notification callback
        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.resource.ResourceRelationshipNotificationSession)
                - a ``ResourceRelationshipNotificationSession``
        raise:  NullArgument - ``resource_relationship_receiver`` or
                ``proxy`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented -
                ``supports_resource_relationship_notification()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_resource_relationship_notification()`` is ``true``.*