createExtensionChangelist example

  public function validate() {
    if (!$this->validated) {
      $this->errors = [];
      // Create the list of installs and uninstalls.       $this->createExtensionChangelist();
      // Validate renames.       foreach ($this->getUnprocessedConfiguration('rename') as $name) {
        $names = $this->storageComparer->extractRenameNames($name);
        $old_entity_type_id = $this->configManager->getEntityTypeIdByName($names['old_name']);
        $new_entity_type_id = $this->configManager->getEntityTypeIdByName($names['new_name']);
        if ($old_entity_type_id != $new_entity_type_id) {
          $this->logError($this->t('Entity type mismatch on rename. @old_type not equal to @new_type for existing configuration @old_name and staged configuration @new_name.', ['@old_type' => $old_entity_type_id, '@new_type' => $new_entity_type_id, '@old_name' => $names['old_name'], '@new_name' => $names['new_name']]));
        }
        // Has to be a configuration entity.         if (!$old_entity_type_id) {
          $this->logError($this->t('Rename operation for simple configuration. Existing configuration @old_name and staged configuration @new_name.', ['@old_name' => $names['old_name'], '@new_name' => $names['new_name']]));
        }