code: private void trackResources(final BundleContext bundleContext) {
  		ServiceTracker<Object, ResourceWebElement> resourceTracker = ResourceTracker.createTracker(extenderContext, bundleContext);
  
  		resourceTracker.open();
  		trackers.add(0, resourceTracker);
  
  		final ServiceTracker<ResourceMapping, ResourceMappingWebElement> resourceMappingTracker = ResourceMappingTracker
  				.createTracker(extenderContext, bundleContext);
  
  		resourceMappingTracker.open();
  		trackers.add(0, resourceMappingTracker);
  	}
docs: Track resources.
  
  @param bundleContext the BundleContext associated with this bundle