std::string new_node_name =
      update_inplace ? node->name()
                     : GetUniqueNodeName(node->name(), index, node_name_map);

  Node* placeholder_node;
  NodeBuilder builder(new_node_name, "Placeholder");
  builder.Attr("shape", shape);
  builder.Attr("dtype", dtype);
  TF_RETURN_IF_ERROR(builder.Finalize(graph_.get(), &placeholder_node));