code: @Weight(Weight.Unit.VARIABLE)
    public static boolean silentSleep(final long milliseconds) {
      boolean result = true;
      try {
        Thread.sleep(milliseconds);
      } catch (InterruptedException ex) {
        result = false;
        Thread.currentThread().interrupt();
      }
      return result;
    }
docs: Just suspend the current thread for defined interval in milliseconds.
  
  @param milliseconds milliseconds to sleep
  @return false if the sleep has been interrupted by InterruptedException, true otherwise.
  @see Thread#sleep(long)
  @since 1.0