code: func (r FutureGetNewAddressResult) Receive() (btcutil.Address, error) {
  	res, err := receiveFuture(r)
  	if err != nil {
  		return nil, err
  	}
  
  	// Unmarshal result as a string.
  	var addr string
  	err = json.Unmarshal(res, &addr)
  	if err != nil {
  		return nil, err
  	}
  
  	return btcutil.DecodeAddress(addr, &chaincfg.MainNetParams)
  }
docs: // Receive waits for the response promised by the future and returns a new
  // address.