public static function install_mock_files()
    {
        $sample_path = Director::baseFolder().'/'.MOCK_DATAOBJECTS_DIR.'/lib';
        $sample_files = glob($sample_path.'/*.jpeg');
        $folder = self::get_mock_folder();
        $installed_sample_files = self::get_mock_files();
        if (sizeof($sample_files) <= $installed_sample_files->count()) {
            return;
        }

        foreach ($sample_files as $file) {
            copy($file, $folder->getFullPath().basename($file));
        }
        $folder->syncChildren();
    }