private NewMPTask createAggTask(Enumeration parents) {
public NewMPTask createAggTask(Collection parents) {
  private NewMPTask createAggTask(Enumeration parents) {    NewMPTask mpTask = inventoryPlugin.getRootFactory().newMPTask();    NewComposition composition = inventoryPlugin.getRootFactory().newComposition();    composition.setIsPropagating(false);    mpTask.setComposition(composition);    composition.setCombinedTask(mpTask);    mpTask.setVerb(new Verb(Constants.Verb.MAINTAININVENTORY));    aggregateDetermineRequirementsTasks(mpTask, parents);    return mpTask;  }