code: def _get_client_fqdn(self, client_info_contents):
      
      yamldict = yaml.safe_load(client_info_contents)
      fqdn = yamldict['system_info']['fqdn']
      client_id = yamldict['client_id'].split('/')[1]
      return client_id, fqdn
docs: Extracts a GRR client's FQDN from its client_info.yaml file.
  
      Args:
        client_info_contents: The contents of the client_info.yaml file.
  
      Returns:
        A (str, str) tuple representing client ID and client FQDN.