public static void GetIntAsync(string key, AsyncGetIntCallbackMethod callback)
        {
            if (callback == null)
            {
                return;
            }

            waitForLastOperation();
            asyncKey            = key;
            asyncGetIntCallback = callback;

            operationType       = PlayerPrefsEx_OperationTypes.GetInt;
            performingOperation = true;
        }
		public static void GetIntAsync(string key, AsyncGetIntCallbackMethod callback)
		{
			if (callback == null) return;

			waitForLastOperation();
			asyncKey = key;
			asyncGetIntCallback = callback;

			operationType = PlayerPrefsEx_OperationTypes.GetInt;
			performingOperation = true;
		}