index = fessConfig.getIndexConfigIndex();
                } else if ("fess_user".equals(index)) {
                    index = fessConfig.getIndexUserIndex();
                } else if ("fess_basic_config".equals(index) && !"fess_config".equals(fessConfig.getIndexConfigIndex())) {
                    index = "basic_" + fessConfig.getIndexConfigIndex();
                }

                        }
                    }
                } else {
                    if (configIndex.startsWith(CONFIG_INDEX_PREFIX)) {
                        final String name = fessConfig.getIndexConfigIndex();
                        indexName = configIndex.replaceFirst(Pattern.quote(CONFIG_INDEX_PREFIX), name);
                    } else if (configIndex.startsWith(USER_INDEX_PREFIX)) {

     * The value is, e.g. fess_config <br>
     * comment: Index name for configuration data.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexConfigIndex();

    /**
     * Get the value for the key 'index.user.index'. <br>
     * The value is, e.g. fess_user <br>
     * comment: Index name for user data.