treeViewer.setInput(document);
	private void makeActions() {		action1 = new Action() {			public void run() {				try {					RepositoryInterface.SearchRepository(document);				} catch (Exception e) {					// TODO Auto-generated catch block					e.printStackTrace();				}				showMessage("Document List refreshed");			}		};		action1.setText("Refresh Document List");		action1.setToolTipText("Refresh Document List");		action1.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().			getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));					}