errorParsing.swift

            switch response.statusCode {
            case 200..<400:
                break
            default:
                if let errorParsed = Mapper<E>().map(JSONToMap) {
                    let failureReason = errorParsed.message
                    let error = newError(.EndpointError, failureReason:
                        failureReason ?? DefaultErrorMessage)
                    return .Failure(error)
                }
            }