The description of
in the documentation is wrong
It said that it suppose to return < GroupRepresentation > array
And GroupRepresentation is suppose to contains attributes. But In fact there is no attributes.
I need them and I'm creating a pull request for that if you are interested. I can return theses attributes by adding `full` query parameter to return the full representation. A lot of endpoint already have this "full"(representation) attribute so this one should have it too.