Вывод всех тегов ms2Gallery

{'pdoResources' | snippet : [
    'loadModels' => 'ms2gallery',
    'class' => 'msResourceFileTag',
    'leftJoin' => '{
        "File":{ "class":"msResourceFile", "on":"File.id = msResourceFileTag.file_id" }
    }',
    'select' => '{
        "msResourceFileTag": "*",
        "File": "*"
    }',
    'where' => '{ "File.resource_id": ' ~ $_modx->resource.id ~ ' }',
    'groupby' => 'tag',
    'sortby' => '{ "tag":"ASC" }',
    'limit' => 0,
    'tpl' => '@INLINE <span>{$tag}</span>'
    'outputSeparator' => ', '
]}