}
  protected Collection getTasksWithoutPEs (Collection tasks) {    Set tasksWithoutPEs = new HashSet();    for (Iterator iter = tasks.iterator(); iter.hasNext(); ) {      Task task = (Task) iter.next();	      if (task.getPlanElement() != null) {	if (logger.isDebugEnabled())	  logger.debug (getMyOrganization() + " - found task that already had a p.e. attached? : " + 			task.getUID() + " - so skipping it.");      }      else {	tasksWithoutPEs.add (task);      }    }    return tasksWithoutPEs;  }