FragmentActivity

FragmentActivity.kt

public class FragmentActivity extends ComponentActivity implements
        ActivityCompat.OnRequestPermissionsResultCallback,
        ActivityCompat.RequestPermissionsRequestCodeValidator {

    ...

    final FragmentController mFragments = FragmentController.createController(new HostCallbacks());

    ...
    
    class HostCallbacks extends FragmentHostCallback<FragmentActivity> implements ... {

        public HostCallbacks() {
            super(FragmentActivity.this /*fragmentActivity*/);
        }
        ...
}