IShape.java
       [IShape.addX, 16] - Abstract Method
       [IShape.addY, 18] - Abstract Method
       [IShape.contain, 20] - Abstract Method
       [IShape.draw, 28] - Abstract Method
       [IShape.setPrimaryColor, 60] - Abstract Method
       [IShape.setShadingColor, 64] - Abstract Method
       [IShape.setStroke, 66] - Abstract Method