public TaskDescriptorTreeNode (TaskDescriptor _task)
public TaskDescriptorTreeNode (TaskDescriptor _task, DefaultTreeModel _model)
	public TaskDescriptorTreeNode (TaskDescriptor _task)	{		super() ;		this.task = _task ;		this.task.addObserver(this) ;		this.setUserObject(task.getName()) ;				Iterator<TaskDefinition> localIterator = task.getTasks().iterator() ;		while (localIterator.hasNext())		{			this.add(new TaskDefinitionTreeNode(localIterator.next())) ;		}	}