code: def ParseFileObject(self, parser_mediator, file_object):
      
      win_registry_reader = FileObjectWinRegistryFileReader()
  
      try:
        registry_file = win_registry_reader.Open(file_object)
      except IOError as exception:
        parser_mediator.ProduceExtractionWarning(
            'unable to open Windows Registry file with error: {0!s}'.format(
                exception))
        return
  
      win_registry = dfwinreg_registry.WinRegistry()
  
      key_path_prefix = win_registry.GetRegistryFileMapping(registry_file)
      registry_file.SetKeyPathPrefix(key_path_prefix)
      root_key = registry_file.GetRootKey()
      if not root_key:
        return
  
      registry_find_specs = getattr(
          parser_mediator.artifacts_filter_helper, 'registry_find_specs', None)
  
      if not registry_find_specs:
        try:
          self._ParseRecurseKeys(parser_mediator, root_key)
        except IOError as exception:
          parser_mediator.ProduceExtractionWarning('{0!s}'.format(exception))
  
      else:
        artifacts_filter_helper = artifact_filters.ArtifactDefinitionsFilterHelper
        if not artifacts_filter_helper.CheckKeyCompatibility(key_path_prefix):
          logger.warning((
              'Artifacts filters are not supported for Windows Registry file '
              'with key path prefix: "{0:s}".').format(key_path_prefix))
  
        else:
          try:
            win_registry.MapFile(key_path_prefix, registry_file)
            self._ParseKeysFromFindSpecs(
                parser_mediator, win_registry, registry_find_specs)
          except IOError as exception:
            parser_mediator.ProduceExtractionWarning('{0!s}'.format(exception))
docs: Parses a Windows Registry file-like object.
  
      Args:
        parser_mediator (ParserMediator): parser mediator.
        file_object (dfvfs.FileIO): a file-like object.