Consider the following code snippet:

Consider the following code snippet:

class Door {
  void open() { print('Door opened'); }
  void close() { print('Door closed'); }
}

class DoorOpenCommand implements Command {
  Door door;
  DoorOpenCommand(this.door);
  void execute() { door.open(); }
}

void main() {
  Door door = Door();
  Command command = DoorOpenCommand(door);
  command.execute();
}

What will be the output when this code runs?