anchor.diff:                     bool clockwise) native "Path_arcToPoint";
   
   
  -  /// Appends up to four conic curves weighted to describe an oval of [radius]
  -  /// and rotated by [rotation].
  +  /// Appends up to four conic curves weighted to describe an oval of `radius`
  +  /// and rotated by `rotation`.
     ///
     /// The last path point is described by (px, py).
     ///
     /// The first curve begins from the last point in the path and the last ends
  -  /// at [arcEndDelta].dx + px and [arcEndDelta].dy + py. The curves follow a
  -  /// path in a direction determined by [clockwise] and [largeArc]
  +  /// at `arcEndDelta.dx + px` and `arcEndDelta.dy + py`. The curves follow a
  +  /// path in a direction determined by `clockwise` and `largeArc`
     /// in such a way that the sweep angle is always less than 360 degrees.
     ///
     /// A simple line is appended if either either radii are zero, or, both
  -  /// [arcEndDelta].dx and [arcEndDelta].dy are zero. The radii are scaled to
  +  /// `arcEndDelta.dx` and `arcEndDelta.dy` are zero. The radii are scaled to
     /// fit the last path point if both are greater than zero but too small to
     /// describe an arc.
     void relativeArcToPoint(Offset arcEndDelta, {
  
positive.code:   /// layer is being composited.
    ///
    /// Defaults to [BlendMode.srcOver].
    BlendMode get blendMode {
      final int encoded = _data.getInt32(_kBlendModeOffset, _kFakeHostEndian);
      return BlendMode.values[encoded ^ _kBlendModeDefault];
  
negative.code:   void _arcTo(double left, double top, double right, double bottom,
                double startAngle, double sweepAngle, bool forceMoveTo) native "Path_arcTo";
  
    /// Appends up to four conic curves weighted to describe an oval of `radius`
    /// and rotated by `rotation`.
    ///
    /// The first curve begins from the last point in the path and the last ends
    /// at `arcEnd`. The curves follow a path in a direction determined by
    /// `clockwise` and `largeArc` in such a way that the sweep angle
    /// is always less than 360 degrees.
    ///
    /// A simple line is appended if either either radii are zero or the last
    /// point in the path is `arcEnd`. The radii are scaled to fit the last path
    /// point if both are greater than zero but too small to describe an arc.
    ///
    void arcToPoint(Offset arcEnd, {
  