Chat::getLastMessages

public function getLastMessages(int $upperBound, int $lowerBound): array
{
	$lastMessagesRaw = ImModelMessageTable::query()
		->setSelect(['ID'])
		->where('ID', '>=', $lowerBound)
		->where('ID', '<=', $upperBound)
		->where('CHAT_ID', $this->chatId)
		->setOrder(['ID' => 'DESC'])
		->setLimit(50)
		->fetchAll()
	;
	$lastMessageIds = [];
	foreach ($lastMessagesRaw as $row)
	{
		$lastMessageIds[] = (int)$row['ID'];
	}

	return $lastMessageIds;
}