self::$tribe_registered_plugins = array();
            add_action('plugins_loaded', array($this, 'activate_plugins'), 999);
        }
        /**
         * Register a plugin / helper class
         *
         * @param string $slug    - slug specific to the helper class / plugin
         * @param string $version - version of the helper class / plugin
         * @param string $path    - absolute path of the helper class / plugin file
         */
        public static function register($slug, $version, $path)
        {
            if (!isset(self::$tribe_registered_plugins[$slug]) || version_compare(self::$tribe_registered_plugins[$slug]['version'], $version, '<')) {
                self::$tribe_registered_plugins[$slug] = array('version' => $version, 'path' => $path);
            }
        }
        /**
         * Activate all plugins.
         */
        public function activate_plugins()
        {
            foreach (self::$tribe_registered_plugins as $k => $v) {
                require_once $v['path'];
                do_action('tribe_helper_activate_' . $k);
            }
            do_action('tribe_helper_activation_complete');
        }
    }
}
TribeCommonLibraries::getInstance();