docs: private HttpHandler getAggregationHandler() throws ServletException {
          DeploymentInfo deploymentInfo = Servlets
                  .deployment()
                  .setClassLoader(JashingServer.class.getClassLoader())
                  .setContextPath("/")
                  .setDeploymentName("jashing")
                  .addFilterUrlMapping("wro4j", "/*", DispatcherType.REQUEST)
                  .addFilter(Servlets.filter("wro4j", ConfigurableWroFilter.class,
                          new InstanceFactory<ConfigurableWroFilter>() {
                              @Override
                              public InstanceHandle<ConfigurableWroFilter> createInstance()
                                      throws InstantiationException {
                                  ConfigurableWroFilter filter = new ConfigurableWroFilter();
                                  filter.setWroManagerFactory(new WroManagerFactory());
                                  return new ImmediateInstanceHandle<>(filter);
                              }
                          }));
          DeploymentManager deployment = Servlets.defaultContainer().addDeployment(deploymentInfo);
          deployment.deploy();
          return deployment.start();
      }