code: private ConfigBuilder copyConfigBuilder() {
      return configBuilder()
          .withReader(config.reader())
          .withWriter(config.writer())
          .withConnectionFactory(config.connectionFactory())
          .withCommandHandler(config.commandHandler())
          .withPropertyHandler(config.propertyHandler())
          .withEnv(config.env());
    }
docs: Creates a {@link ConfigBuilder} that contains a copy of the current
  configuration.