code: func (c *statsClient) Timing(name string, value time.Duration, rate float64) {
  	if err := c.client.Timing(prefix+name, value, c.tags, rate); err != nil {
  		c.logger.Printf("statsd.StatsClient.Timing error: %s", err)
  	}
  }
docs: // Timing tracks timing information for a metric.