private void onConnected(Session session) {
  // Create map for params
  WritableMap payload = Arguments.createMap();
  // Put data to map
  payload.putString("sessionId", session.getSessionId());
  // Get EventEmitter from context and send event thanks to it
  this.reactContext
    .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
    .emit("onSessionConnect", params);
}