code: def bios_settings(self):
          
          return bios.BIOSSettings(
              self._conn, utils.get_subresource_path_by(self, 'Bios'),
              redfish_version=self.redfish_version)
docs: Property to provide reference to `BIOSSettings` instance
  
          It is calculated once when the first time it is queried. On refresh,
          this property gets reset.