public Task getTask() {
  Item item = Queue.getInstance().getItem(queueItemId);
  if (item != null) {
    return item.task;
  } else {
    return null;
  }
}
 

@Override
public void foldIntoExisting(Item item, Task owner, List<Action> actions) {
    item.addOrReplaceAction(this);
}
 

public Task getItem(final Combination combination) {
    return null;
}