maybe_success.swift

let maybe = Maybe<Int>.create { observer in
    observer(.success(0))
    return Disposables.create()
}

// AS IS 
maybe.subscribe(onSuccess: { value in
    print("Got a value:", value)
}, onError: { error in
    print("Got a error:", error)
}, onCompleted: {
     print("On Completed")
}, onDisposed: {

}).disposed(by: disposeBag)
// Prints
Got a value: 0


// TO BE
Task {
    do {
        let value = try await maybe.value
        print("Got a value:", value)
    } catch {
        print("Got a error:", error)
    }
}

// Prints 
Got a value: Optional(0)