}
    public void removeRefillProjection(Task task) {      Task refillProj = null;      for (int i=0; i < refillProjections.size(); i++) {        refillProj = (Task)refillProjections.get(i);        if ((refillProj != null) &&            (refillProj.getUID().equals(task.getUID()))) {          refillProjections.set(i, null);        }      }//         int index;//         while ((index = refillProjections.indexOf(task)) != -1) {//             refillProjections.set(index, null);//         }    }