code: def _check_required_group(self):
          
          required_group_dn = self.settings.REQUIRE_GROUP
  
          if required_group_dn is not None:
              if not isinstance(required_group_dn, LDAPGroupQuery):
                  required_group_dn = LDAPGroupQuery(required_group_dn)
              result = required_group_dn.resolve(self)
              if not result:
                  raise self.AuthenticationFailed(
                      "user does not satisfy AUTH_LDAP_REQUIRE_GROUP"
                  )
  
          return True
docs: Returns True if the group requirement (AUTH_LDAP_REQUIRE_GROUP) is
          met. Always returns True if AUTH_LDAP_REQUIRE_GROUP is None.