for (String s : ext) {
                    if (conf.equals(s)) {
                        String configName = config.getName();
                        configsToAdd.add(configName);
                        addExtendingConfigurations(configName, dd,
                            useDefaultMappingToGuessRightOperand);
                    }
                }
            }

            System.setProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS, httpAddress);
        }

        waitForYellowStatus(fessConfig);

        indexConfigList.forEach(configName -> {
            final String[] values = configName.split("/");
            if (values.length == 2) {
                final String configIndex = values[0];
                final String configType = values[1];