Constructs a \Drupal\aggregator\Controller\AggregatorController object.
\Drupal\Core\Entity\EntityManager $entity_manager: The Entity manager.
\Drupal\Core\Config\ConfigFactory $config_factory: The config factory.
\Drupal\Core\Database\Connection $database: The database connection.
\Drupal\Core\Extension\ModuleHandlerInterface $module_handler: The module handler.
public function __construct(EntityManager $entity_manager, Connection $database, ConfigFactory $config_factory, ModuleHandlerInterface $module_handler) {
$this->entityManager = $entity_manager;
$this->database = $database;
$this->configFactory = $config_factory;
$this->moduleHandler = $module_handler;
}