@dgelessus , ok I think I see. Actually draw also does not exist in a custom class unless you have a draw method. I was just doing some print dir(obj) to understand your post.
If you print dir(custom_class) without a draw method defined it does not show up. So I guess it's just added at runtime as required. Not sure that's normal or not. I would have thought the method would be there, but not the ImageContext etc...not sure if it's normal or not . But seems like maybe @omz took a logic short cut 😱😈😈😈
Sure I will regret this post also, I am probably way off course. I will learn to keep my big mouth shut one day.