public function deleteBookmark(Request $request, int $locationId): RestValue
    {
        $location = $this->locationService->loadLocation($locationId);

        try {
            $this->bookmarkService->deleteBookmark($location);

            return new Values\NoContent();
        } catch (InvalidArgumentException $e) {
            throw new Exceptions\NotFoundException("Location {$locationId} is not bookmarked");
        }
    }