def METHOD_NAME(self, *args, **kwargs):
    rolecount = self.get_queryset().count()
    if rolecount == 0:
        return self.get_no_roles_response(*args, **kwargs)
    elif rolecount == 1:
        return self.get_single_role_response(*args, **kwargs)
    else:
        return self.get_multiple_roles_response(*args, **kwargs)