TF_OpDefinitionBuilderAddOutput(op_builder, "output: type");
  TF_OpDefinitionBuilderAddAttr(
      op_builder,
      "T: {bfloat16, half, float, double, int64, int32, uint8, uint16, "
      "uint32, uint64, int8, int16, complex64, complex128, qint8, quint8, "
      "qint16, quint16, qint32}");
  TF_OpDefinitionBuilderAddAttr(
      op_builder,
      "type: {bfloat16, half, float, double, int64, int32, uint8, uint16, "

  TF_DeleteStatus(status);
}

TEST(OpsTest, AttributeAccessors) {
  TF_OpDefinitionBuilder* builder =
      TF_NewOpDefinitionBuilder("AttributeAccessorsOp");
  TF_OpDefinitionBuilderAddAttr(builder, "foo1: int >= 2");
  TF_OpDefinitionBuilderAddAttr(builder, "foo2: string=\"my string\"");
  TF_OpDefinitionBuilderSetIsCommutative(builder, true);
  TF_OpDefinitionBuilderSetIsAggregate(builder, true);

  TF_OpDefinitionBuilderAddInput(op_builder, "tags: string");
  TF_OpDefinitionBuilderAddInput(op_builder, "values: T");
  TF_OpDefinitionBuilderAddOutput(op_builder, "summary: string");
  TF_OpDefinitionBuilderAddAttr(op_builder, "T: realnumbertype");
  TF_OpDefinitionBuilderSetShapeInferenceFunction(
      op_builder, &scalar_summary_shape_inference_fn);

  TF_RegisterOpDefinition(op_builder, status);

      TF_NewOpDefinitionBuilder("MergeSummary");
  TF_OpDefinitionBuilderAddInput(op_builder, "inputs: N * string");
  TF_OpDefinitionBuilderAddOutput(op_builder, "summary: string");
  TF_OpDefinitionBuilderAddAttr(op_builder, "N: int >= 1");
  TF_OpDefinitionBuilderSetShapeInferenceFunction(
      op_builder, &merge_summary_shape_inference_fn);

  TF_RegisterOpDefinition(op_builder, status);

  TF_OpDefinitionBuilderAddInput(op_builder, "tag: string");
  TF_OpDefinitionBuilderAddInput(op_builder, "values: T");
  TF_OpDefinitionBuilderAddOutput(op_builder, "summary: string");
  TF_OpDefinitionBuilderAddAttr(op_builder, "T: realnumbertype = DT_FLOAT");
  TF_OpDefinitionBuilderSetShapeInferenceFunction(
      op_builder, &histogram_summary_shape_inference_fn);

  TF_RegisterOpDefinition(op_builder, status);

// corresponding functions, e.g.
//
// TF_OpDefinitionBuilderAddInput(builder, "input1: int32");
// TF_OpDefinitionBuilderAddOutput(builder, "output1: int64");
// TF_OpDefinitionBuilderAddAttr(builder, "attr: int32");
//
// The builder may then be registered with TensorFlow using the
// TF_RegisterOpDefinition function. E.g.
//
// TF_Status* status = TF_NewStatus();

  }

DEFINE_BUILDER_BOOL_SETTER(SetIsCommutative)
DEFINE_BUILDER_BOOL_SETTER(SetIsAggregate)
DEFINE_BUILDER_BOOL_SETTER(SetIsStateful)
DEFINE_BUILDER_BOOL_SETTER(SetAllowsUninitializedInput)

void TF_OpDefinitionBuilderAddAttr(TF_OpDefinitionBuilder* builder,
                                   const char* attr_spec) {
  reinterpret_cast<OpDefBuilder*>(builder)->Attr(attr_spec);
}