/// <summary>
/// Uses ResetEvent to limit a process once every 'delay' milliseconds after the last time.
/// </summary>
/// <param name="lockObj">the lock object of the wait closure</param>
/// <param name="delay">delay in milliseconds after the last wait</param>
public TimedLocker(int delay, object lockObj = null) {
_delay = delay;
LockObject = lockObj ?? new object();
counter = new CountdownTimer(delay);
counter.Elapsed += () => semaphore.Release();
}