IblockRightsChecker::checkSectionRight

protected function checkSectionRight(int $sectionId, string $right): bool
{
	$cachedRights = $this->sectionsRights[$sectionId] ?? null;
	if ($cachedRights !== null)
	{
		return isset($cachedRights[$right]);
	}

	return CIBlockSectionRights::UserHasRightTo($this->getIblockId(), $sectionId, $right);
}