Bug 287103 [CommonNavigator] contentServiceLabelProvider doesn't properly implement overrides
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/SorterTest.java
assertEquals("BlueChild1", addedParent.getItem(0).getText());
		assertEquals("BlueChild2", addedParent.getItem(1).getText());
	}
	public void testSorterContentAdd() throws Exception {
		waitForModelObjects();
		_contentService.bindExtensions(
				new String[] { TEST_CONTENT_SORTER_MODEL }, false);
		_contentService.getActivationService().activateExtensions(
				new String[] { TEST_CONTENT_SORTER_MODEL }, false);
		dynamicAddModelObjects();
		TreeItem[] items = _viewer.getTree().getItems();
		TreeItem addedParent = items[_projectInd].getItem(0);
		assertEquals("BlueAddedParent", addedParent.getText());
		
		
		assertEquals("BlueAddedChild1", addedParent.getItem(0).getText());
		assertEquals("BlueChild1", addedParent.getItem(1).getText());
		assertEquals("BlueAddedFile1.txt", addedParent.getItem(2).getText());
		assertEquals("BlueAddedFile2.txt", addedParent.getItem(3).getText());
	}
	public void testSorterContentAddOverride() throws Exception {
		waitForModelObjects();
		_contentService.bindExtensions(
				new String[] { TEST_CONTENT_SORTER_MODEL_OVERRIDE }, false);
		_contentService.getActivationService().activateExtensions(
				new String[] { TEST_CONTENT_SORTER_MODEL_OVERRIDE }, false);
		dynamicAddModelObjects();
		TreeItem[] items = _viewer.getTree().getItems();
		TreeItem addedParent;