ChatConfigConnectionsRestorer::restoreEventHandler

private function restoreEventHandler(EventManager $eventManager, string $event, string $eventHandlerClass): void
{
	$eventHandler = $this->findEventHandler($eventManager, $event);
	if (empty($eventHandler))
	{
		$eventManager->registerEventHandler('main', $event, 'im', $eventHandlerClass, $event);
	}
}