protected SqlExceptionHelper sqlExceptionHelper() {
   return transactionCoordinator
       .getJdbcCoordinator()
       .getLogicalConnection()
       .getJdbcServices()
       .getSqlExceptionHelper();
 }
 protected ConnectionProvider connectionProvider() {
   return transactionCoordinator
       .getJdbcCoordinator()
       .getLogicalConnection()
       .getJdbcServices()
       .getConnectionProvider();
 }