{\n      $(this._backdrop).removeClass(CLASS_NAME_SHOW)\n\n      const callbackRemove = () => {\n        this._removeBackdrop()\n        if (callback) {\n          callback()\n        }\n      }\n\n      if ($(this._element).hasClass(CLASS_NAME_FADE)) {\n        const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)\n\n        $(this._backdrop)\n          .one(Util.TRANSITION_END, callbackRemove)\n          .emulateTransitionEnd(backdropTransitionDuration)\n      }...