treeViewer.setSorter(new RepositorySorter());
	public void createPartControl(Composite parent) {        treeViewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);        contentProvider = new RemoteContentProvider();        treeViewer.setContentProvider(contentProvider);        treeViewer.setLabelProvider(new WorkbenchLabelProvider());        getSite().setSelectionProvider(treeViewer);        root = new AllRootsElement();        treeViewer.setInput(root);//      viewer.setSorter(new RepositorySorter());        drillPart = new DrillDownAdapter(treeViewer);                contributeActions();         // F1 Help        String helpID = getHelpContextId();        if (helpID != null)            WorkbenchHelp.setHelp(treeViewer.getControl(), helpID);        initializeListeners();		SVNUIPlugin.getPlugin().getRepositoryManager().addRepositoryListener(repositoryListener);	}