Swift protocol extension method dispatch with superclass and subclass

Question

I found an interesting behaviour which seems like a bug...

Based on the behaviour described the following articles:

https://medium.com/ios-os-x-development/s

Answer 1

An option that hasn't been considered is to split up your protocol into several smaller ones, such that the superclass does not need to conform to protocols containing methods it does not intend to implement. The subclass can then subscribe to these other protocols separately.