Bug 315281 update copyrights for 3.6
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/navigator/resources/ProjectExplorer.java
String result;
		if (!(element instanceof IResource)) {
			if (element instanceof IAggregateWorkingSet) {
				result = WorkbenchNavigatorMessages.ProjectExplorerPart_workingSetModel;
			} else if (element instanceof IWorkingSet) {
				result = ((IWorkingSet) element).getLabel();
			} else {
				result = super.getFrameToolTipText(element);
			}
		} else {
			IPath path = ((IResource) element).getFullPath();
			if (path.isRoot()) {
				result = WorkbenchNavigatorMessages.ProjectExplorerPart_workspace;
			} else {
				result = path.makeRelative().toString();
			}
		}
		if (rootMode == PROJECTS) {
			if (workingSetLabel == null)
				return result;
			if (result.length() == 0)
				return NLS.bind(WorkbenchNavigatorMessages.ProjectExplorer_toolTip,
						new String[] { workingSetLabel });
			return NLS.bind(WorkbenchNavigatorMessages.ProjectExplorer_toolTip2, new String[] {
					result, workingSetLabel });
		}
		
		
		if (element != null && !(element instanceof IWorkingSet)
				&& getCommonViewer() != null) {