[keycloak-user] User groups empty attributes from GET /admin/realms/{realm}/users/{id}/groups (no api description)

[adam.michalski at aol.com]

Api docs for:
GET /admin/realms/{realm}/users/{id}/groups


returns list of GroupRepresentation array with empty attributes.

In other rest returning this list there is description: only name and ids are returned but not in this one. 

How to get list of groups with attributes with single request?