startMultiSessionUssd method
Starts a multi-session USSD session
ussdCode - The USSD code to start the session
subscriptionId - (Optional) Subscription ID (SIM slot).
If not provided and there are multiple SIMs, the native selector will be shown.
If there is only one SIM, it is used by default.
Returns a map with the operation result. Requires the accessibility service to be enabled.
Implementation
Future<Map<String, dynamic>> startMultiSessionUssd(
String ussdCode, {
int? subscriptionId,
}) {
throw UnimplementedError(
'startMultiSessionUssd() has not been implemented.',
);
}