/**
  * Returns the instance.
  *
  * @since  1.0.0
  * @access public
  * @return object
  */
 public static function get_instance()
 {
     static $instance = null;
     if (is_null($instance)) {
         $instance = new self();
         $instance->setup();
         $instance->includes();
         $instance->setup_actions();
     }
     return $instance;
 }