/**
  * Main Pootle Page Builder Live Editor Instance
  * Ensures only one instance of Storefront_Extension_Boilerplate is loaded or can be loaded.
  * @since 1.0.0
  * @return Pootle_Page_Builder_Live_Editor_Public instance
  */
 public static function instance()
 {
     if (null == self::$_instance) {
         self::$_instance = new self();
     }
     return self::$_instance;
 }