eZ\Publish\Core\Repository\SectionService::loadSectionByIdentifier PHP Method

    public function loadSectionByIdentifier($sectionIdentifier)
    {
        if (!is_string($sectionIdentifier) || empty($sectionIdentifier)) {
            throw new InvalidArgumentValue('sectionIdentifier', $sectionIdentifier);
        }
        if ($this->repository->hasAccess('section', 'view') !== true) {
            throw new UnauthorizedException('section', 'view');
        }
        $spiSection = $this->sectionHandler->loadByIdentifier($sectionIdentifier);
        return $this->buildDomainSectionObject($spiSection);
    }