SessionHandleAdapter.getInstance( ).getSessionHandle( ) .addResourceChangeListener( this );
	public void refreshRoot( )	{		LibDirectoryNodeModel rootModel = new LibDirectoryNodeModel(				ReportPlugin.getDefault( ).getResourcePreference( ) );		treeViewer.setInput( rootModel );		SessionHandleAdapter.getInstance( ).getSessionHandle( )				.addResourceChangeListener( this );	}