ImportSendingService::getChatIdsByMessageIds

private function getChatIdsByMessageIds(array $messageIds): array
{
	$result = [];
	if (empty($messageIds))
	{
		return [];
	}

	$messages = MessageTable::query()
		->setSelect(['ID', 'CHAT_ID'])
		->whereIn('ID', $messageIds)
		->fetchCollection()
	;

	foreach ($messages as $message)
	{
		$result[$message->getId()] = $message->getChatId();
	}

	return $result;
}