ConfigImporterEvent example

$context['finished'] = 1;
    }
  }

  /** * Finishes the batch. * * @param array|\ArrayAccess $context * The batch context. */
  protected function finish(&$context) {
    $this->eventDispatcher->dispatch(new ConfigImporterEvent($this), ConfigEvents::IMPORT);
    // The import is now complete.     $this->lock->release(static::LOCK_NAME);
    $this->reset();
    $context['message'] = t('Finalizing configuration synchronization.');
    $context['finished'] = 1;
  }

  /** * Gets the next extension operation to perform. * * Uninstalls are processed first with themes coming before modules. Then * installs are processed with modules coming before themes. This order is * necessary because themes can depend on modules. * * @return array|bool * An array containing the next operation and extension name to perform it * on. If there is nothing left to do returns FALSE; */