How to declare optional methods in a Swift protocol?

Hello! I started learning Swift and am trying to understand protocols. I have a `MyDelegate` protocol that I want to use for delegation. I want some methods in this protocol to be optional — meaning the class that adopts the protocol can choose not to implement them. Here's what I'm trying to do: ```swift protocol MyDelegate { func requiredMethod() optional func optionalMethod() // Error: 'optional' can only be applied to members of an @objc protocol } ``` The compiler gives an error. I read that in Objective-C you could mark methods as `@optional`, but in Swift this doesn't work directly. I also tried using protocol extensions, but I'm not sure if I'm doing it correctly. My goal is to create a protocol where one method is required (the