Bug 287621 [CommonNavigator] Add more tracing
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/NavigatorContentService.java
}
		return contentProvider;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @seeorg.eclipse.ui.internal.navigator.INavigatorContentService#
	 * createCommonLabelProvider()
	 */
	public ILabelProvider createCommonLabelProvider() {
		if (labelProviderInitialized) {
			return labelProvider;
		}
		synchronized (this) {
			if (labelProvider == null) {
				labelProvider = new NavigatorContentServiceLabelProvider(this);
			}
			labelProviderInitialized = true;
		}
		return labelProvider;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @seeorg.eclipse.ui.navigator.INavigatorContentService#
	 * createCommonDescriptionProvider()
	 */
	public IDescriptionProvider createCommonDescriptionProvider() {
		if (descriptionProvider != null) {
			return descriptionProvider;