The groupID could be... well any groupID in the game. If someone actually passes through a 425mm Railgun they will get the medium rail groupID back.

As this endpoint is only meant for character/alliance/corp thats all I included in the doc string. Can do the same in the consts, but then you get a mix of returns. Doubt you want to pad the const file with all groupIDs in EVE, so I figured it best to leave it to the user of the library to figure out what they wanted to use the endpoint for.