createConference method
Create a local conference with another call by its identifier
There can be only one local conference
If the local conference exists the method will add new participants into it
otherCallId
the call's identifier for a local conference
Implementation
Future<void> createConference({required String otherCallId}) async {
CallPlatform.instance
.createConference(otherCallId: otherCallId, callId: id ?? "");
}