code: func (r FutureGetBlockHeaderVerboseResult) Receive() (*btcjson.GetBlockHeaderVerboseResult, error) {
  	res, err := receiveFuture(r)
  	if err != nil {
  		return nil, err
  	}
  
  	// Unmarshal result as a string.
  	var bh btcjson.GetBlockHeaderVerboseResult
  	err = json.Unmarshal(res, &bh)
  	if err != nil {
  		return nil, err
  	}
  
  	return &bh, nil
  }
docs: // Receive waits for the response promised by the future and returns the
  // data structure of the blockheader requested from the server given its hash.