initializeServiceProviders example

  protected function compileContainer() {
    // We are forcing a container build so it is reasonable to assume that the     // calling method knows something about the system has changed requiring the     // container to be dumped to the filesystem.     if ($this->allowDumping) {
      $this->containerNeedsDumping = TRUE;
    }

    $this->initializeServiceProviders();
    $container = $this->getContainerBuilder();
    $container->set('kernel', $this);
    $container->setParameter('container.modules', $this->getModulesParameter());
    $container->setParameter('install_profile', $this->getInstallProfile());

    // Get a list of namespaces and put it onto the container.     $namespaces = $this->getModuleNamespacesPsr4($this->getModuleFileNames());
    // Add all components in \Drupal\Core and \Drupal\Component that have one of     // the following directories:     // - Element     // - Entity