code: func (r FutureListReceivedByAccountResult) Receive() ([]btcjson.ListReceivedByAccountResult, error) {
  	res, err := receiveFuture(r)
  	if err != nil {
  		return nil, err
  	}
  
  	// Unmarshal as an array of listreceivedbyaccount result objects.
  	var received []btcjson.ListReceivedByAccountResult
  	err = json.Unmarshal(res, &received)
  	if err != nil {
  		return nil, err
  	}
  
  	return received, nil
  }
docs: // Receive waits for the response promised by the future and returns a list of
  // balances by account.