std::unique_ptr<flexbuffers::Builder>
Translator::CreateFlexBuilderWithNodeAttrs(
    const ::tensorflow::NodeDef& node_def, const mlir::Location& loc) {
  auto flex_builder = std::make_unique<flexbuffers::Builder>();
  size_t map_start = flex_builder->StartMap();
  using Item = std::pair<std::string, ::tensorflow::AttrValue>;
  std::vector<Item> attrs(node_def.attr().begin(), node_def.attr().end());
  std::sort(attrs.begin(), attrs.end(),