STPBankAccountToken

        let bankAccParams = STPBankAccountParams()
        bankAccParams.accountHolderName = "John Doe"
        bankAccParams.accountHolderType = STPBankAccountHolderType.individual
        bankAccParams.accountNumber = "000123456789"
        bankAccParams.routingNumber = "110000000"
        bankAccParams.country = "US"

        STPAPIClient.shared().createToken(withBankAccount: bankAccParams) { (token, error) in
            if let error = error {
                print(error)
            }
            else {
                print(token)
            }
        }