private async void TestBody()
{
int res1 = -1, res2 = -1;
await Task.Delay(500);
// 1. 비동기 수행
mtd.Request(() => res1 = Random.Range(0, 1000));
Debug.Log(res1);
await Task.Delay(500);
// 2. 대기 - Action
await mtd.RequestAsync(() => { res2 = Random.Range(0, 1000); });
Debug.Log(res2);
await Task.Delay(500);
// 3. 대기 - Func<int>
Task <int> resultTask = mtd.RequestAsync(() => Random.Range(0, 1000));
await resultTask;
Debug.Log(resultTask.Result);
}