@Override
    protected void setupHtmlData(final ActionRuntime runtime) {
        super.setupHtmlData(runtime);
        runtime.registerData("helpLink", systemHelper.getHelpLink(fessConfig.getOnlineHelpNamePlugin()));
    }

    /**
     * Returns the action role for this controller.
     *
     * @return the role identifier for plugin administration
     */
    @Override
    protected String getActionRole() {

     * The value is, e.g. plugin <br>
     * comment: Online help key for plugin.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getOnlineHelpNamePlugin();

    /**
     * Get the value for the key 'online.help.name.storage'. <br>
     * The value is, e.g. storage <br>
     * comment: Online help key for storage.