anchor.diff:    SyntheticWheelEvent(
       bool bubbles,
       bool cancelable,
  -    bool currentTarget,
  +    dynamic currentTarget,
       bool defaultPrevented,
       dynamic preventDefault,
       dynamic stopPropagation,
  
positive.code:   SyntheticPointerEvent(
        bool bubbles,
        bool cancelable,
        bool currentTarget,
        bool defaultPrevented,
        dynamic preventDefault,
        dynamic stopPropagation,
  
negative.code:   SyntheticUIEvent(
      bool bubbles,
      bool cancelable,
      dynamic currentTarget,
      bool _defaultPrevented,
      dynamic _preventDefault,
      dynamic stopPropagation,
  