on getSettingsSlug() {
        return get_class($this) . 'Settings';
    }

    protected function addSettingsSubMenuPageToPluginsMenu() {
        $this->requireExtraPluginFiles();
        $displayName = $this->getPluginDisplayName();
        add_submenu_page('plugins.php',
            $displayName,
            $displayName,
            'manage_options',
            $this->getSettingsSlug(),
            array(&$this, 'settingsPage'));
    }


    protected function addSettingsSubMenuPageToSettingsMenu() {
        $this->requireExtraPluginFiles();
        $displayName = $this->getPluginDisplayName();
        add_options_page($displayName,
            $displayName,
            'manage_options',
            $this->getSettingsSlug(),
            array(&$this, 'settingsPage'));
    }

    /**
     * @param  $name string name of a database table
     * @return string input prefixed with the WordPress DB table prefix
     * plus the prefix for this plugin (lower-cased) to avoid table name collisions.
     * The plugin prefix is lower-cases as a best practice that all DB table names are lower case to
     * avoid issues on some platforms
     */
    protected function prefixTableName($name) {
        global $wpdb;
        return $wpdb->prefix .  strtolower($this->prefix($name));
    }


    /**
     * Convenience function for creating AJAX URLs.
     *
     * @param $actionName string the name of the ajax action registered in a call like
     * add_action('wp_ajax_actionName', array(&$this, 'functionName'));
     *     and/or
     * add_action('wp_ajax_nopriv_actionName', array(&$this, 'functionName'));
     *
     * If have an additional parameters to add to the Ajax call, e.g. an "id" parameter,
     * you could call this function and append to the returned string like:
     *    $url = $this->getAjaxUrl('myaction&id=') . urlencode($id);
     * or more complex:
     *    $url = sprintf($this->getAjaxUrl('myaction&id=%s&var2=%s&var3=%s'), urlencode($id), urlencode($var2), urlencode($var3));
     *
     * @return string URL that can be used in a web page to make an Ajax call to $this->functionName
     */
    public function getAjaxUrl($actionName) {
        return admin_url('admin-ajax.php') . '?action=' . $actionName;
    }

    public function registerPluginActionLinks( $actions, $plugin_file ) {
        if ($this->getMainPluginFileName() == basename($plugin_file)) {
            $settings = array('settings' => '<a href="' . admin_url( 'tools.php?page=wpml_plugin_log&tab=settings' ) . '">' . __( 'Settings', 'General' ) . '</a>' );
            $actions = array_merge($settings, $actions);
        }
        return $actions;
    }

}