code: @Nonnull
    public static ESuccess sleepSeconds (@Nonnegative final long nSeconds)
    {
      ValueEnforcer.isGE0 (nSeconds, "Seconds");
      return sleep (nSeconds * CGlobal.MILLISECONDS_PER_SECOND);
    }
docs: Sleep the current thread for a certain amount of time
  
  @param nSeconds
  The seconds to sleep. Must be &ge; 0.
  @return {@link ESuccess#SUCCESS} if sleeping was not interrupted,
  {@link ESuccess#FAILURE} if sleeping was interrupted