code: func NewSendToAddressCmd(address string, amount float64, comment, commentTo *string) *SendToAddressCmd {
  	return &SendToAddressCmd{
  		Address:   address,
  		Amount:    amount,
  		Comment:   comment,
  		CommentTo: commentTo,
  	}
  }
docs: // NewSendToAddressCmd returns a new instance which can be used to issue a
  // sendtoaddress JSON-RPC command.
  //
  // The parameters which are pointers indicate they are optional.  Passing nil
  // for optional parameters will use the default value.