PlantUML Sequence Diagram sd 'tag'

[ee-suan]

Hi everyone, I am trying to use a ref frame in my sequence diagram, but I can't seem to find a way to get the sd 'tag' for the separate diagram shown here using PlantUML. Has anyone using a ref frame managed to figure this out? Thanks in advance!

[sltsheryl]

I was also looking if there’s a special way to get sd, but I think the closest is to use

group sd reference_frame_name
// insert what’s inside sd
end

[ee-suan]

It seems that this is the best we can do. Thanks for sharing!