Number extends Object
Byte extends Number
Integer extends Byte
Widget extends Object
Shape extends Object
Rectangle extends Shape
Square extends Rectangle

void mash(Number, Shape)
Number area(Shape)
Integer area(Shape)
void area(Square)
Byte area(Rectangle)
Number side(Square)
void doIt()

Integer doIt()
Number area(Rectangle)
void mash()
void mash(Rectangle, Square)
void mash(Byte, Square)