code: public static void sleepQuietly(final long sleepFor, final TimeUnit unit) {
  		try {
  			Thread.sleep(unit.toMillis(sleepFor));
  		} catch (Throwable t) {
  			// do nothing
  		}
  	}
docs: Sleeps and eats any exceptions
  @param sleepFor Sleep for value
  @param unit Unit of measure