code: def transfer_list(request, detailed=True, search_opts=None):
      
      c_client = cinderclient(request)
      try:
          return [VolumeTransfer(v) for v in c_client.transfers.list(
              detailed=detailed, search_opts=search_opts)]
      except cinder_exception.Forbidden as error:
          LOG.error(error)
          return []
docs: List volume transfers.
  
      To see all volumes transfers as an admin pass in a special
      search option: {'all_tenants': 1}