title: The argument type 'Container Function(BuildContext, int)' can't be assigned to the parameter type 'Widget Function(BuildContext, int, int)'
body: <p>I try to use <code>CarousellSlider.builder</code>, but I get an error. I used the code from the example on the pub.dev page (<a href="https://pub.dev/packages/carousel_slider" rel="nofollow noreferrer">https://pub.dev/packages/carousel_slider</a>). I get the error on the line (<code>itemBuilder: (BuildContext context, int itemIndex) =&gt; Container(</code>).</p>
  <p>The error message is: <code>The argument type 'Container Function(BuildContext, int)' can't be assigned to the parameter type 'Widget Function(BuildContext, int, int)'.</code></p>
  <p>This is my code:</p>
  <pre><code>CarouselSlider.builder(
    itemCount: motivationImages.length,
    itemBuilder: (BuildContext context, int index) {
         Container();
      }
      options: CarouselOptions(
        height: 300,
      ),
  ),
  </code></pre>