callStateChanged method
Implementation
@override
void callStateChanged(String callId, PitelCallState state) {
  if (kDebugMode) {
    print('❌ ❌ ❌ callStateChanged $callId state ${state.state.toString()}');
  }
}
@override
void callStateChanged(String callId, PitelCallState state) {
  if (kDebugMode) {
    print('❌ ❌ ❌ callStateChanged $callId state ${state.state.toString()}');
  }
}