如何在Native侧构建一个ArkTS对象

// native 层创建对象arg_object 
napi_value arg_object; 
napi_create_object(env, &arg_object);

napi_value testNum, testString; 
// 给上面创建的arg_object对象设置属性testNum并赋值123 
napi_create_int32(env, 123, &testNum); 
napi_set_named_property(env, arg_object, "testNum", testNum); 
// 给上面创建的arg_object对象设置属性testString赋值"Pure" 
napi_create_string_utf8(env, "Pure", NAPI_AUTO_LENGTH, &testString); 
napi_set_named_property(env, arg_object, "testString", testString);