public void Reset()
{
_counterCurrent.Set(0);
_counterTotal.Set(0);
}
/// <summary>
/// Sets the time when last seen online to now.
/// </summary>
/// <returns>The number of successful checks.</returns>
public int SuccessfullyChecked()
{
_lastSeenOnline.Set(Convenient.CurrentTimeMillis());
_failed.Set(0);
return(_successfullyChecked.IncrementAndGet());
}