searchlight/api-ref/source/samples/list-plugins-response.json

{
    "plugins": [
        {
             "type": "OS::Glance::Image",
             "alias-indexing": "searchlight-listener",
             "alias-searching": "searchlight-search"
        },
        {
             "type": "OS::Glance::Metadef",
             "alias-indexing": "searchlight-listener",
             "alias-searching": "searchlight-search"
        }
    ]
}