def get_config_items(self):
        """
        Return current configuration as a :class:`tuple` with
        option-value pairs.

        ::
            (('option1', value1), ('option2', value2))
        """
        return (
            ('settings', self.settings),
            ('context_class', self.context_class),
            ('interfaces', self.interfaces),
            ('logging', self.logging),
            ('name', self.name),
            ('init_handler', self.init_handler),
            ('sigusr1_handler', self.sigusr1_handler),
            ('sigusr2_handler', self.sigusr2_handler),
        )