/**
  * Initialize the plugin by requiring/recommending plugins and adding a
  * settings page and menu.
  *
  * @since     0.1.0
  */
 private function __construct()
 {
     $plugin = NerveTask::get_instance();
     $this->plugin_slug = $plugin->get_plugin_slug();
     // Register required/recommended plugins
     add_action('tgmpa_register', array($this, 'register_required_plugins'));
     // Add the options page and menu item.
     add_action('admin_menu', array($this, 'add_plugin_admin_menu'));
 }
 /**
  * Return an instance of this class.
  *
  * @since     0.1.0
  *
  * @return    object    A single instance of this class.
  */
 public static function get_instance()
 {
     // If the single instance hasn't been set, set it now.
     if (null == self::$instance) {
         self::$instance = new self();
     }
     return self::$instance;
 }