code: def validate_configs(self):
          
          # Check required arguments, validate values
          for conf in self.REQUIRED_CONFIGS:
              if conf not in self._config:
                  raise MissingConfigError('Missing required configuration %s' % conf)
docs: Check that required config are set.
          :raises :class:`~responsebot.common.exceptions.MissingConfigError`: if a required config is missing