code: func NewReq(query string, from, to uint32, cons consolidation.Consolidator) Req {
  	return Req{
  		Query: query,
  		From:  from,
  		To:    to,
  		Cons:  cons,
  	}
  }
docs: // NewReq creates a new Req. pass cons=0 to leave consolidator undefined,
  // leaving up to the caller (in graphite's case, it would cause a lookup into storage-aggregation.conf)