/**
  * Gets a new ContainerBuilder instance used to build the service container.
  *
  * @param KernelInterface $kernel
  * @return ContainerBuilder
  */
 protected function getContainerBuilder(KernelInterface $kernel)
 {
     $containerBuilder = new ContainerBuilder(new ParameterBag($this->getKernelParameters($kernel)));
     if (class_exists('ProxyManager\\Configuration') && class_exists('Symfony\\Bridge\\ProxyManager\\LazyProxy\\Instantiator\\RuntimeInstantiator')) {
         $containerBuilder->setProxyInstantiator(new RuntimeInstantiator());
     }
     return $containerBuilder;
 }