How to use RateLimiter to call api? about ratelimiter HOT 4 CLOSED

for (int i = 0; i < 1000; i++)
        {
            await timeconstraint.Perform(ConsoleIt);
        }

 private void ConsoleIt()
    {
        Console.WriteLine(string.Format("{0:MM/dd/yyy HH:mm:ss.fff}", DateTime.Now));
        Thread.Sleep(3000); //simulate api call made and waiting for response. 
    }`

        //Create Time constraint: max five times by second
        var timeconstraint = TimeLimiter.GetFromMaxCountByInterval(5, TimeSpan.FromSeconds(1));
        //Use it
        for (int i = 0; i < 1000; i++)
        {
            await timeconstraint.Perform(ConsoleIt);
        }

        return true;
    }
    private Task ConsoleIt()
    {
        Console.WriteLine(string.Format("{0:MM/dd/yyy HH:mm:ss.fff}", DateTime.Now));
        Thread.Sleep(3000); //simulate api call made and waiting for response. 
        Console.WriteLine("Finished");
        return Task.FromResult(0);

    }

for (int i = 0; i < 1000; i++)
        {
            await timeconstraint.Perform(ConsoleIt);
        }

 private void ConsoleIt()
    {
        Task.Run(() => {
         Console.WriteLine(string.Format("{0:MM/dd/yyy HH:mm:ss.fff}", DateTime.Now));
        Thread.Sleep(3000); //simulate api call made and waiting for response. 
     });
}