docs: def reset_bios_to_default(self):
          """Resets the BIOS settings to default values.
  
          :raises: IloError, on an error from iLO.
          :raises: IloCommandNotSupportedError, if the command is not supported
                   on the server.
          """
          # Check if the BIOS resource if exists.
          headers_bios, bios_uri, bios_settings = self._check_bios_resource()
          # Get the BaseConfig resource.
          try:
              base_config_uri = bios_settings['links']['BaseConfigs']['href']
          except KeyError:
              msg = ("BaseConfigs resource not found. Couldn't apply the BIOS "
                     "Settings.")
              raise exception.IloCommandNotSupportedError(msg)
  
          # Check if BIOS resource supports patch, else get the settings
          if not self._operation_allowed(headers_bios, 'PATCH'):
              headers, bios_uri, _ = self._get_bios_settings_resource(
                  bios_settings)
              self._validate_if_patch_supported(headers, bios_uri)
  
          status, headers, config = self._rest_get(base_config_uri)
          if status != 200:
              msg = self._get_extended_error(config)
              raise exception.IloError(msg)
  
          new_bios_settings = {}
          for cfg in config['BaseConfigs']:
              default_settings = cfg.get('default', None)
              if default_settings is not None:
                  new_bios_settings = default_settings
                  break
          else:
              msg = ("Default Settings not found in 'BaseConfigs' resource.")
              raise exception.IloCommandNotSupportedError(msg)
          request_headers = self._get_bios_hash_password(self.bios_password)
          status, headers, response = self._rest_patch(bios_uri, request_headers,
                                                       new_bios_settings)
          if status >= 300:
              msg = self._get_extended_error(response)
              raise exception.IloError(msg)