// Returns the serialized CppShapeInferenceResult::HandleData proto for
// `output` if its a resource or variant tensor, or otherwise returns the empty
// string.
TF_CAPI_EXPORT extern TF_Buffer* TF_GetHandleShapeAndType(TF_Graph* graph,
                                                          TF_Output output);

// Sets `output` based on `proto`, which should be a serialized