code: public long time(final Stat name) {
          name.requiresTimer();
          final Stopwatch stopwatch = tracker.getTimers().get(name);
          return stopwatch == null ? 0 : stopwatch.elapsed(TimeUnit.MILLISECONDS);
      }
docs: Note: time stats are measured in nanoseconds and after conversion to millisecond it may become 0.
  Usually it makes no sense to log such small values, and 0 value makes it easier to filter out them.
  In contrast, when using {@link #humanTime(Stat)} for such timers, correct value will be printed.
  
  @param name statistic name
  @return collected time in milliseconds or 0 (is stat value is not available)
  @throws IllegalStateException if provided stat is not time stat