code: func (h *Client) QueueTime(queueTime int64) *Client {
  	h.queueTime = queueTime
  	h.queueTimeSet = true
  	return h
  }
docs: // Used to collect offline / latent hits. The value represents
  // the time delta (in milliseconds) between when the hit being
  // reported occurred and the time the hit was sent. The value
  // must be greater than or equal to 0. Values greater than
  // four hours may lead to hits not being processed.