Bug 300012 [CommonNavigator] CNF test improvements
Various improvements and corrections.
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/extension/TestPipelineProvider.java
return super.interceptUpdate(update);
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.navigator.ICommonContentProvider#init(org.eclipse.ui.navigator.ICommonContentExtensionSite)
	 */
	public void init(ICommonContentExtensionSite config) {
		_id = config.getExtension().getId();
		int i = _id.lastIndexOf('.');
		if (i >= 0) {
			_id = _id.substring(i+1);
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
	 */
	public Object[] getChildren(Object parentElement) {
		try {
			_track(ELEMENTS, parentElement, _id + "1");
			return ((ResourceWrapper)parentElement).getChildren();
		} catch (CoreException e) {
			e.printStackTrace();
			return NO_CHILDREN;
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
	 */
	public Object getParent(Object element) {
		
		return null;