public static final String ERRORS_invalid_header_for_request_file = "{errors.invalid_header_for_request_file}";

    /** The key of the message: You cannot delete a user who is logged in. */
    public static final String ERRORS_could_not_delete_logged_in_user = "{errors.could_not_delete_logged_in_user}";

    /** The key of the message: Unauthorized request. */

    /** Whether to use pipelines for document processing */
    protected boolean usePipeline = false;

    /**
     * Adds an index configuration file path to be loaded.
     *
     * @param path path to the index configuration file
     */
    public void addIndexConfig(final String path) {
        indexConfigList.add(path);
    }

    /**