docs: def record(self, value=1.0, time_ms=None):
          """
          Record a value at a known time.
          Arguments:
              value (double): The value we are recording
              time_ms (int): A POSIX timestamp in milliseconds.
                  Default: The time when record() is evaluated (now)
  
          Raises:
              QuotaViolationException: if recording this value moves a
                  metric beyond its configured maximum or minimum bound
          """
          if time_ms is None:
              time_ms = time.time() * 1000
          self._last_record_time = time_ms
          with self._lock:  # XXX high volume, might be performance issue
              # increment all the stats
              for stat in self._stats:
                  stat.record(self._config, value, time_ms)
              self._check_quotas(time_ms)
          for parent in self._parents:
              parent.record(value, time_ms)