code: func NewPilosaForwarder(phost string, t Translator, colTranslator ...FieldTranslator) *pilosaForwarder {
  	if !strings.HasPrefix(phost, "http://") {
  		phost = "http://" + phost
  	}
  	f := &pilosaForwarder{
  		phost: phost,
  		km:    NewPilosaKeyMapper(t, colTranslator...),
  	}
  	f.proxy = NewPilosaProxy(phost, &f.client)
  	return f
  }
docs: // NewPilosaForwarder returns a new pilosaForwarder which forwards all requests
  // to `phost`. It inspects pilosa responses and runs the row ids through the
  // Translator `t` to translate them to whatever they were mapped from.