startCall method
Implementation
@override
Future<String?> startCall({required String token, required String roomId, String? displayName}) async {
try {
await methodChannel.invokeMethod('startCall', {
'token': token,
'room_id': roomId,
'display_name': displayName,
});
} on PlatformException catch (ex) {
return ex.message;
}
return null;
}