message: [NFC] Adopt ArrayAttr::empty()
diff: @@ -334,7 +334,7 @@ SmallVector<StringRef, 2> GetExportedNames(Operation *op) {
  bool IsExported(Operation *op) {
  auto exported_names =
  op->getAttrOfType<ArrayAttr>("tf_saved_model.exported_names");
  - return exported_names && exported_names.size() != 0;
  + return exported_names && !exported_names.empty();
  }
  bool HasTfSavedModelSemantics(ModuleOp module) {
  