code: def ParseOptions(self, options):
      
      # The data location is required to list signatures.
      helpers_manager.ArgumentHelperManager.ParseOptions(
          options, self, names=['data_location'])
  
      # Check the list options first otherwise required options will raise.
      signature_identifiers = self.ParseStringOption(
          options, 'signature_identifiers')
      if signature_identifiers == 'list':
        self.list_signature_identifiers = True
  
      if self.list_signature_identifiers:
        return
  
      self._ParseInformationalOptions(options)
      self._ParseLogFileOptions(options)
  
      self._ParseStorageMediaOptions(options)
  
      self._destination_path = self.ParseStringOption(
          options, 'path', default_value='export')
  
      if not self._data_location:
        logger.warning('Unable to automatically determine data location.')
  
      argument_helper_names = ['artifact_definitions', 'process_resources']
      helpers_manager.ArgumentHelperManager.ParseOptions(
          options, self, names=argument_helper_names)
  
      self._ParseFilterOptions(options)
  
      if (getattr(options, 'no_vss', False) or
          getattr(options, 'include_duplicates', False)):
        self._skip_duplicates = False
  
      self._EnforceProcessMemoryLimit(self._process_memory_limit)
docs: Parses the options and initializes the front-end.
  
      Args:
        options (argparse.Namespace): command line arguments.
  
      Raises:
        BadConfigOption: if the options are invalid.