/**
     * Initialize the plugin by loading admin scripts & styles and adding a
     * settings page and menu.
     *
     * @since     1.0.0
     */
    private function __construct()
    {
        /*
         * @TODO :
         *
         * - Uncomment following lines if the admin class should only be available for super admins
         */
        /* if( ! is_super_admin() ) {
        			return;
        		} */
        /*
         * Call $plugin_slug from public plugin class.
         */
        $plugin = WP_Whitelabel::get_instance();
        $this->plugin_slug = $plugin->get_plugin_slug();
        // Load admin style sheet and JavaScript.
        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_styles'));
        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'));
        // Add the options page and menu item.
        add_action('admin_menu', array($this, 'add_plugin_admin_menu'));
        // Add an action link pointing to the options page.
        $plugin_basename = plugin_basename(plugin_dir_path(__DIR__) . $this->plugin_slug . '.php');
        add_filter('plugin_action_links_' . $plugin_basename, array($this, 'add_action_links'));
        // Populate options page
        add_action('admin_init', array($this, 'wp_whitelabel_settings_init'));
        /*
         * Define custom functionality.
         *
         * Read more about actions and filters:
         * http://codex.wordpress.org/Plugin_API#Hooks.2C_Actions_and_Filters
         */
        add_action('@TODO', array($this, 'action_method_name'));
        add_filter('@TODO', array($this, 'filter_method_name'));
        if (get_option('wp_whitelabel_yoast_ads') && is_plugin_active('wordpress-seo/wp-seo.php')) {
            function whitelabel_yoast()
            {
                echo '<style type="text/css">
			           body.toplevel_page_wpseo_dashboard #sidebar-container { display: none; }
			           body.seo_page_wpseo_titles #sidebar-container { display: none; }
			           body.seo_page_wpseo_social #sidebar-container { display: none; }
			           body.seo_page_wpseo_xml #sidebar-container { display: none; }
			           body.seo_page_wpseo_permalinks #sidebar-container { display: none; }
			           body.seo_page_wpseo_internal-links #sidebar-container { display: none; }
			           body.seo_page_wpseo_rss #sidebar-container { display: none; }
			           body.seo_page_wpseo_import #sidebar-container { display: none; }
			           body.seo_page_wpseo_files #sidebar-container { display: none; }
			         </style>';
            }
            add_action('admin_head', 'whitelabel_yoast');
        }
        function remove_page_analysis_from_publish_box()
        {
            return false;
        }
        add_filter('wpseo_use_page_analysis', 'remove_page_analysis_from_publish_box');
    }
 /**
  * Return an instance of this class.
  *
  * @since     1.0.0
  *
  * @return    object    A single instance of this class.
  */
 public static function get_instance()
 {
     // If the single instance hasn't been set, set it now.
     if (null == self::$instance) {
         self::$instance = new self();
     }
     return self::$instance;
 }