case ::tensorflow::AttrValue::kS:
        flex_builder->String(key, attr.s());
        break;
      case ::tensorflow::AttrValue::kType: {
        auto status_or_tfl_type = tflite::TfTypeToTflType(attr.type());
        if (status_or_tfl_type.ok()) {
          flex_builder->Int(key, status_or_tfl_type.value());
        } else {
          emitWarning(loc, "ignoring unsupported tensorflow type: ")