this.pause()\n    }\n\n    this._setActiveIndicatorElement(nextElement)\n    this._activeElement = nextElement\n\n    const slidEvent = $.Event(EVENT_SLID, {\n      relatedTarget: nextElement,\n      direction: eventDirectionName,\n      from: activeElementIndex,\n      to: nextElementIndex\n    })\n\n    if ($(this._element).hasClass(CLASS_NAME_SLIDE)) {\n      $(nextElement).addClass(orderClassName)\n\n      Util.reflow(nextElement)\n\n      $(activeElement).addClass(directionalClassName)\n ...

     orderClassName = ClassName.PREV\n      eventDirectionName = Direction.RIGHT\n    }\n\n    if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {\n      this._isSliding = false\n      return\n    }\n\n    const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)\n    if (slideEvent.isDefaultPrevented()) {\n      return\n    }\n\n    if (!activeElement || !nextElement) {\n      // Some weirdness is happening, so we bail\n      return\n    }\n\n    this._isSliding = true\n\n...

       *
       * https://github.com/typetools/checker-framework/issues/3030
       *
       * https://github.com/typetools/checker-framework/issues/3236
       */
      String key = (String) requireNonNull(e.nextElement());
      /*
       * requireNonNull is safe because the key came from propertyNames...
       *
       * ...except that it's possible for users to insert a string key with a non-string value, and

       *
       * https://github.com/typetools/checker-framework/issues/3030
       *
       * https://github.com/typetools/checker-framework/issues/3236
       */
      String key = (String) requireNonNull(e.nextElement());
      /*
       * requireNonNull is safe because the key came from propertyNames...
       *
       * ...except that it's possible for users to insert a string key with a non-string value, and