AttrValue device_ordinal_temp_value;
  device_ordinal_temp_value.set_i(0);
  protobuf::Map<string, AttrValue> host_func_attrs;
  host_func_attrs["_device_ordinal"] = device_ordinal_temp_value;
  TF_CHECK_OK(FunctionDefToBodyHelper(
      *fld.Find("host_graph"), AttrSlice(&host_func_attrs), &fld, &host_fbody));
  Graph *host_graph = host_fbody->graph;
  Node *key_placeholder = nullptr, *sequencer = nullptr;