private void FillSubPaths(ICanvas canvas)
{
canvas.StrokeColor = Colors.LightGrey;
canvas.DrawRectangle(150.5f, 150.5f, 50, 50);
var path = new PathF();
path.AppendRectangle(175.5f, 150.5f, 25, 50);
path.AppendOval(175.5f, 150.5f, 25, 50);
canvas.FillColor = Colors.Black;
canvas.FillPath(path);
}
