title: 'onRequestPermissionsResult' overrides nothing
body: <p>I'm trying to implement a verfication on permission result for my Activity:</p>
  <pre><code>class MainActivity : FlutterActivity() {
     //...
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array&lt;String?&gt;?, grantResults: IntArray) {
  </code></pre>
  <p>But I get</p>
  <pre><code>MainActivity.kt: (325, 5): 'onRequestPermissionsResult' overrides nothing
  </code></pre>
  <p>According to <a href="https://developer.android.com/reference/androidx/core/app/ActivityCompat.OnRequestPermissionsResultCallback" rel="nofollow noreferrer">https://developer.android.com/reference/androidx/core/app/ActivityCompat.OnRequestPermissionsResultCallback</a>, activity extends this interface</p>