drawImage method Null safety
Draws the given Image into the canvas with its top-left corner at the given Offset. The image is composited into the canvas using the given Paint.
Implementation
void drawImage(Image image, Offset offset, Paint paint) {
assert(image != null); // image is checked on the engine side
assert(_offsetIsValid(offset));
assert(paint != null);
_drawImage(image._image, offset.dx, offset.dy, paint._objects, paint._data, paint.filterQuality.index);
}