code: def allocate_ids(self, project_id, keys):
          
          request_pb = _datastore_pb2.AllocateIdsRequest(keys=keys)
          return _rpc(
              self.client._http,
              project_id,
              "allocateIds",
              self.client._base_url,
              request_pb,
              _datastore_pb2.AllocateIdsResponse,
          )
docs: Perform an ``allocateIds`` request.
  
          :type project_id: str
          :param project_id: The project to connect to. This is
                             usually your project name in the cloud console.
  
          :type keys: List[.entity_pb2.Key]
          :param keys: The keys for which the backend should allocate IDs.
  
          :rtype: :class:`.datastore_pb2.AllocateIdsResponse`
          :returns: The returned protobuf response object.