ViewModel

//https://medium.com/blablacar-tech/rxswift-mvvm-66827b8b3f10

protocol ViewModel {
    associatedtype Input
    associatedtype Output
    
    func transform(input: Input) -> Output
}

class ViewModelExample: ViewModel {
    struct Output {}
    
    struct Input { }
    
    func transform(input: Input) -> Output {
        return Output()
    }
}