code: @Nullable
      public static ClientConnectionTimings get(RequestLog log) {
          requireNonNull(log, "log");
          if (log.hasAttr(TIMINGS)) {
              return log.attr(TIMINGS).get();
          }
          return null;
      }
docs: Returns {@link ClientConnectionTimings} from the specified {@link RequestLog} if exists.
  
  @see #setTo(RequestLog)