eZ\Publish\Core\Repository\LocationService::loadLocations PHP Method

    public function loadLocations(ContentInfo $contentInfo, APILocation $rootLocation = null)
    {
        if (!$contentInfo->published) {
            throw new BadStateException('$contentInfo', 'ContentInfo has no published versions');
        }
        $spiLocations = $this->persistenceHandler->locationHandler()->loadLocationsByContent($contentInfo->id, $rootLocation !== null ? $rootLocation->id : null);
        $locations = array();
        foreach ($spiLocations as $spiLocation) {
            $locations[] = $this->domainMapper->buildLocationDomainObject($spiLocation);
        }
        return $locations;
    }