code: def get_user_tenants(user, group):
      
      if user.is_active and user.is_authenticated():
          if user.is_superuser or is_group_manager(user, group.pk):
              return Tenant.objects.filter(group=group)
          else:
              return Tenant.objects.filter(group=group, tenantrole__user=user).distinct()
      else:
          return Tenant.objects.none()
docs: Return the set of associated Tenants for the given user and group.