exchangeRate property
If applicable, this transaction uses an exchange rate. If money converts from currency A to currency B, then the amount in currency A, multipled by the exchange_rate, equals the amount in currency B. For example, if you charge a customer 10.00 EUR, the PaymentIntent's amount is 1000 and currency is eur. If this converts to 12.34 USD in your Stripe account, the BalanceTransaction's amount is 1234, its currency is usd, and the exchange_rate is 1.234.
Implementation
double? exchangeRate;