getTreeViewer().getTree().setRedraw(true);
getTreeViewer().expandToLevel(2); tree.setRedraw(true);   Object selectedElement= getSelectedElement(); if (selectedElement != null) getTreeViewer().reveal(selectedElement);
		public void toggleShowInheritedMembers() {			getTreeViewer().getTree().setRedraw(false);			fShowInheritedMembers= !fShowInheritedMembers;			getTreeViewer().refresh();			getTreeViewer().getTree().setRedraw(true);		}