code: public static PercentileTimer get(Registry registry, Id id) {
      return computeIfAbsent(registry, id, 0L, Long.MAX_VALUE);
    }
docs: Creates a timer object that can be used for estimating percentiles. <b>Percentile timers
  are expensive compared to basic timers from the registry.</b> Be diligent with ensuring
  that any additional dimensions have a small bounded cardinality. It is also highly
  recommended to explicitly set a range
  (see {@link Builder#withRange(long, long, TimeUnit)}) whenever possible.
  
  @param registry
  Registry to use.
  @param id
  Identifier for the metric being registered.
  @return
  Timer that keeps track of counts by buckets that can be used to estimate
  the percentiles for the distribution.