A good way to handle HTTP in swift combine

combine_http.swift

let url = URL(string: "https://postman-echo.com/time/valid?timestamp=2016-10-10")!
struct PostmanResponse: Decodable {
    let valid: Bool
}

enum ApiError: Error {
    case invalidServerResponse
}

let publisher = URLSession.shared.dataTaskPublisher(for: url)
    .tryMap { data, response in
        guard let res = response as? HTTPURLResponse, res.statusCode == 200 else {
            throw ApiError.invalidServerResponse
        }
        return data
    }
    .decode(type: PostmanResponse.self, decoder: JSONDecoder())

publisher.sink(receiveCompletion: { completion in
    print(".sink() received the completion", String(describing: completion))
    switch completion {
    case .finished:
        break
    case .failure(let anError):
        print("received error: ", anError)
    }
}, receiveValue: { value in
    print(".sink() received value: \(value)")
})