executePayWithAgreement method
Executes the payment with an existing agreement using the provided paymentId and idToken.
Returns a PayWithAgreementExecuteResponseModel if the execution is successful,
or a BkashFailure indicating the reason for failure.
Implementation
Future<Either<BkashFailure, PayWithAgreementExecuteResponseModel>>
executePayWithAgreement({
required String paymentId,
required String idToken,
}) async =>
await _payWithAgreementApi.executePayWithAgreement(
paymentId: paymentId,
idToken: idToken,
);