petUsage.swift

let myPet: Pet = .dog(breed: .siberianHusky)

switch myPet {
  case .dog(let dog):
    switch dog {
      case .siberianHusky:
        print("I have a Husky!")
      case .germanSheperd:
        print("I have a German Sheperd!")
    }
  
  case .cat(let cat):
    switch cat {
      case .siamese:
        print("I have a Siamese Cat!")
      case .abyssian:
        print("I have an Abyssian Cat !")
    }
}