docs: def _load_group_permissions(self):
          """
          Populates self._group_permissions based on LDAP group membership and
          Django group permissions.
          """
          group_names = self._get_groups().get_group_names()
  
          perms = Permission.objects.filter(group__name__in=group_names)
          perms = perms.values_list('content_type__app_label', 'codename')
          perms = perms.order_by()
  
          self._group_permissions = set(["%s.%s" % (ct, name) for ct, name in perms])