SendbirdSdkInternal constructor
Implementation
SendbirdSdkInternal({
  String? appId,
  String? apiToken,
  Options? options,
}) {
  // _api.initialize(appId: appId, token: apiToken);
  _state
    ..appId = appId
    ..token = apiToken;
  _options = options ?? Options();
  _api = ApiClient(state: _state, appId: appId, token: apiToken);
  _connectionResult = ConnectivityResult.none;
  _listenConnectionEvents();
}