anchor.diff:    /// Defines the blending method (alpha compositing) to use when drawing this
     /// frame.
     int blendMethod = BLEND_OVER;
  +  /// Pixels are encoded into 4-byte integers, where each byte is an RGBA
  +  /// channel.
  +  final Uint32List data;
   
     /**
      * Create an image with the given dimensions and format.
  
positive.code:   int get format => _format;
  
    /**
     * Set the format of the image, either [RGB] or [RGBA].
     */
    void set format(int f) {
      if (f == _format) {
  
negative.code:    */
    void setPixel(int x, int y, int color) {
      if (boundsSafe(x, y)) {
        data[y * width + x] = color;
      }
    }
  
  