public struct Customer: Decodable {
    let name: String
    let accountNumber: Int
    let archived: Bool

    private enum CodingKeys: String, CodingKey {
        case name
        case accountNumber
        case archived
    }

    public init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)

        name = try container.decode(String.self, forKey: .name)
        accountNumber = try container.unwrapAndDecode(Int.self, forKey: .accountNumber)
        archived = try container.unwrapAndDecode(Bool.self, forKey: .archived)
    }
}