docs: def _configure(self, config_object=None):
          # type: (Any) -> None
          """Read the configuration from config files.
          Loads the default settings and the profile settings if available.
          Check :func:`.set_profile`.
  
          :param config_object:
              This parameter is the configuration decscription may be a dict or
              string describing the module from which the configuration is used.
              Default is settings.default_settings.
          """
  
          if config_object:
              self.config.from_mapping(config_object)
          else:
              self.config.from_object(self._default_settings_module)
  
          zsl_settings = os.environ.get(SETTINGS_ENV_VAR_NAME)
          if zsl_settings is not None:
              self.config.from_envvar(SETTINGS_ENV_VAR_NAME)