code: public void onUrlAvailable(String url) {
          if (callback_ != null) {
              callback_.onLinkCreate(url, null);
          }
          updateShareEventToFabric(url);
      }
docs: Calls the callback with the URL. This should be called on finding an existing url
  up on trying to create a URL asynchronously
  
  @param url existing url with for the given data