code: public String formatDurationUnrounded(Duration duration)
     {
        if (duration == null)
           return format(now());
  
        TimeFormat timeFormat = getFormat(duration.getUnit());
        return timeFormat.formatUnrounded(duration);
     }
docs: Format the given {@link Duration} and return a non-relative (not decorated with past or future tense)
  {@link String} for the approximate duration of its difference between the reference {@link Date}. Rounding rules
  are ignored. If the given {@link Duration} is <code>null</code>, the current value of
  {@link System#currentTimeMillis()} will be used instead.
  
  @param duration the duration to be formatted
  @return A formatted string of the given {@link Duration}