def get_log_notification_session(self, log_receiver=None):
raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the log notification service.

        arg:    log_receiver (osid.logging.LogReceiver): the receiver
        return: (osid.logging.LogNotificationSession) - a
                ``LogNotificationSession``
        raise:  NullArgument - ``log_receiver`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_log_notification()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_log_notification()`` is ``true``.*