createPath method
Implementation
@override
Path createPath(Offset offset, double size, Neighbors? neighbors) => Path()
..fillType = PathFillType.evenOdd
..addRect(Rect.fromLTWH(offset.dx, offset.dy, size, size))
..addRect(
Rect.fromLTWH(offset.dx + size / 7, offset.dy + size / 7, size * 5 / 7, size * 5 / 7));