I am aware of this question especially this answer.
According to the documentation calling GET /{realm}/users
gets you a UserRepresentation, which lists clientRoles as optional. That suggests, that it should be available in principle. But I do not know how I can leverage this.
I defined the endpoint as
const usersEndpoint = `${adminEndpoint}/realms/${realm}/users`;
Which should be correct. Or am I reading something wrong?