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

    public function updateLocation(APILocation $location, LocationUpdateStruct $locationUpdateStruct)
    {
        if ($locationUpdateStruct->priority !== null && !is_int($locationUpdateStruct->priority)) {
            throw new InvalidArgumentValue('priority', $locationUpdateStruct->priority, 'LocationUpdateStruct');
        }
        if ($locationUpdateStruct->remoteId !== null && (!is_string($locationUpdateStruct->remoteId) || empty($locationUpdateStruct->remoteId))) {
            throw new InvalidArgumentValue('remoteId', $locationUpdateStruct->remoteId, 'LocationUpdateStruct');
        }
        if ($locationUpdateStruct->sortField !== null && !$this->domainMapper->isValidLocationSortField($locationUpdateStruct->sortField)) {
            throw new InvalidArgumentValue('sortField', $locationUpdateStruct->sortField, 'LocationUpdateStruct');
        }
        if ($locationUpdateStruct->sortOrder !== null && !$this->domainMapper->isValidLocationSortOrder($locationUpdateStruct->sortOrder)) {
            throw new InvalidArgumentValue('sortOrder', $locationUpdateStruct->sortOrder, 'LocationUpdateStruct');
        }
        $loadedLocation = $this->loadLocation($location->id);
        if ($locationUpdateStruct->remoteId !== null) {
            try {
                $existingLocation = $this->loadLocationByRemoteId($locationUpdateStruct->remoteId);
                if ($existingLocation !== null && $existingLocation->id !== $loadedLocation->id) {
                    throw new InvalidArgumentException('locationUpdateStruct', 'location with provided remote ID already exists');
                }
            } catch (APINotFoundException $e) {
            }
        }
        if (!$this->repository->canUser('content', 'edit', $loadedLocation->getContentInfo(), $loadedLocation)) {
            throw new UnauthorizedException('content', 'edit');
        }
        $updateStruct = new UpdateStruct();
        $updateStruct->priority = $locationUpdateStruct->priority !== null ? $locationUpdateStruct->priority : $loadedLocation->priority;
        $updateStruct->remoteId = $locationUpdateStruct->remoteId !== null ? trim($locationUpdateStruct->remoteId) : $loadedLocation->remoteId;
        $updateStruct->sortField = $locationUpdateStruct->sortField !== null ? $locationUpdateStruct->sortField : $loadedLocation->sortField;
        $updateStruct->sortOrder = $locationUpdateStruct->sortOrder !== null ? $locationUpdateStruct->sortOrder : $loadedLocation->sortOrder;
        $this->repository->beginTransaction();
        try {
            $this->persistenceHandler->locationHandler()->update($updateStruct, $loadedLocation->id);
            $this->repository->commit();
        } catch (Exception $e) {
            $this->repository->rollback();
            throw $e;
        }
        return $this->loadLocation($loadedLocation->id);
    }