code: public void removedService(ServiceReference<FilterFactory> reference, FilterFactoryReference service) {
          bundleContext.ungetService(reference);
          if (service != null) {
              service.dispose();
              LOGGER.debug("removed filterFactory for application {}", applicationName);
          }
      }
docs: <p>removedService.</p>
  
  @param reference a {@link org.osgi.framework.ServiceReference} object.
  @param service a {@link org.ops4j.pax.wicket.internal.filter.FilterFactoryReference} object.