anchor.diff:  ///   ),
   /// )
   /// ```
  +///
  +/// ## Debugging
  +///
  +/// To see how large the hit test box of a [GestureDetector] is for debugging
  +/// purposes, set [debugPaintPointersEnabled] to true.
   class GestureDetector extends StatelessWidget {
     /// Creates a widget that detects gestures.
     ///
  
positive.code:   final GestureScaleEndCallback onScaleEnd;
  
    /// How this gesture detector should behave during hit testing.
    final HitTestBehavior behavior;
  
    /// Whether to exclude these gestures from the semantics tree. For
  
negative.code:   final Map<Type, GestureRecognizerFactory> gestures;
  
    /// How this gesture detector should behave during hit testing.
    ///
    /// This defaults to [HitTestBehavior.deferToChild] if [child] is not null and
    /// [HitTestBehavior.translucent] if child is null.
    final HitTestBehavior behavior;
  
    /// Whether to exclude these gestures from the semantics tree. For
  