Swift Enum no Cases

/*
    Very simple example ispired by this article 
    https://www.natashatherobot.com/swift-enum-no-cases/
*/
enum Errors {
    static let generic = "Generic Error"
    
    enum HTTP {
        static let err400 = "400 Not found"
    }
}

let error = Errors.generic
let secondError = Errors.HTTP.err400
print("\(error) and \(secondError) :)")