DeletedMessageFiles::getFileIdsByMessageIds

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

	return LinkFileTable::query()
		->setSelect(['DISK_FILE_ID'])
		->whereIn('MESSAGE_ID', $messageIds)
		->fetchCollection()
		->getDiskFileIdList()
	;
}