getEmptyChangelist example

$this->typedConfigManager = $typed_config;
    $this->moduleHandler = $module_handler;
    $this->moduleInstaller = $module_installer;
    $this->themeHandler = $theme_handler;
    $this->stringTranslation = $string_translation;
    if ($extension_list_theme === NULL) {
      @trigger_error('Calling ' . __METHOD__ . ' without the $extension_list_theme argument is deprecated in drupal:10.1.0 and will be required in drupal:11.0.0. See https://www.drupal.org/node/3284397', E_USER_DEPRECATED);
      $extension_list_theme = \Drupal::service('extension.list.theme');
    }
    $this->themeExtensionList = $extension_list_theme;
    foreach ($this->storageComparer->getAllCollectionNames() as $collection) {
      $this->processedConfiguration[$collection] = $this->storageComparer->getEmptyChangelist();
    }
    $this->processedExtensions = $this->getEmptyExtensionsProcessedList();
  }

  /** * Logs an error message. * * @param string $message * The message to log. */
  public function logError($message) {
    

    // raw configuration object are not costly.     $this->sourceCacheStorage = new MemoryBackend();
    $this->sourceStorage = new CachedStorage(
      $source_storage,
      $this->sourceCacheStorage
    );
    $this->targetCacheStorage = new MemoryBackend();
    $this->targetStorage = new CachedStorage(
      $target_storage,
      $this->targetCacheStorage
    );
    $this->changelist[StorageInterface::DEFAULT_COLLECTION] = $this->getEmptyChangelist();
  }

  /** * {@inheritdoc} */
  public function getSourceStorage($collection = StorageInterface::DEFAULT_COLLECTION) {
    if (!isset($this->sourceStorages[$collection])) {
      if ($collection == StorageInterface::DEFAULT_COLLECTION) {
        $this->sourceStorages[$collection] = $this->sourceStorage;
      }
      else {
        

    $this->assertModules(array_keys($modules_to_uninstall), TRUE);
    foreach ($modules_to_uninstall as $module => $info) {
      $this->assertModuleConfig($module);
      $this->assertModuleTablesExist($module);
    }

    // Ensure that we have no configuration changes to import.     $storage_comparer = new StorageComparer(
      $this->container->get('config.storage.sync'),
      $this->container->get('config.storage')
    );
    $this->assertSame($storage_comparer->getEmptyChangelist(), $storage_comparer->createChangelist()->getChangelist());

    // Now we have all configuration imported, test all of them for schema     // conformance. Ensures all imported default configuration is valid when     // all modules are enabled.     $names = $this->container->get('config.storage')->listAll();
    /** @var \Drupal\Core\Config\TypedConfigManagerInterface $typed_config */
    $typed_config = $this->container->get('config.typed');
    foreach ($names as $name) {
      $config = $this->config($name);
      $this->assertConfigSchema($typed_config, $name, $config->get());
    }
  }