import DWAplatform

    //....

    // Configure DWAplatform
    let dwaplatform = DWAplatform.sharedInstance
    let config = DWAplatformConfiguration(hostName: "DWAPLATFORM_SANDBOX_HOSTNAME", sandbox: true)
    dwaplatform.initialize(config: config)

    // Get card API
    let cardAPI = dwaplatform.getCardAPI()

    // Register card
    // get token from POST call: .../rest/v1/:clientId/users/:userId/accounts/:accountId/cards
    let token = "XXXXXXXXYYYYZZZZKKKKWWWWWWWWWWWWTTTTTTTFFFFFFF...."
    let cardNumber = "1234567812345678"
    let expiration = "1122"
    let cxv = "123"

    do {
        try cardAPI.registerCard(token: token, cardNumber: cardNumber, expiration: expiration, cxv: cxv) {(card, e) in
            if let error = e {
                // error handler
                print(error)
                return
            }

            guard let card = card else { fatalError() }
            print(card.id ?? "nil id")
        }
    }
    catch let error {
        // error handler
        print(error)
    }