public static async Task Task2(IThrottler throttler)
{
Console.WriteLine("Async throttler...");
var stopwatch = Stopwatch.StartNew();
for (var i = 0; i < 350; i++)
{
// USe async mode
await throttler.WaitForPermissionAsync();
Console.WriteLine($"Async - {i}");
}
stopwatch.Stop();
Console.WriteLine($"{stopwatch.Elapsed.TotalSeconds:##.00} s");
}