Details fieldset twig template

Ok I have tried to figure this out but since the "Twig debug" option in development doesn't output any suggestions maybe you folks can help me out.

I am using the "Details" feildset, which is pulled from the details.html.twig core file, but i can't figure out the synax to over-ride details.html.twig for my details feildset with the machine name of "group_cinema_details_feildset".

Any help would be great, thanks.