TFE_DeleteOp(fn2);

  TFE_DeleteContext(ctx);
  TF_DeleteStatus(status);
}

string MatMulFunction() {
  tensorflow::FunctionDef def;
  CHECK(tensorflow::protobuf::TextFormat::ParseFromString(
      "    signature {"
      "      name: 'MatMulFunction'"
      "      input_arg {"
      "        name: 'a'"
      "        type: DT_FLOAT"
      "      }"