Stopping Google play leaderboards loading during load

I've implemented the official Google Play game services plugin into my game and managed to show a loading icon whenever the user presses the button to upload his/her score.

However I also want to implement a stop button into my game to stop loading the google leaderboards.

How do I program something like that? In the current plugin code isn't a funtion/method to stop the call to the server.

Link to official Google Play game services plugin: https://github.com/playgameservices/play-games-plugin-for-unity

Current loading script:

 if (Social.localUser.authenticated == true) {
                         Social.ReportScore(Score.localScore, "LeaderboardsCode", (bool success) => {
                             ((PlayGamesPlatform)Social.Active).ShowLeaderboardUI("LeaderboardsCode");
                             loadingObject.SetActive(false);
                             EnableAllChilds();
                         });
 } else {
                         Social.localUser.Authenticate((bool success) => {
                             Social.ReportScore(Score.localScore, "LeaderboardsCode", (bool reportSuccess) => {
                                 ((PlayGamesPlatform)Social.Active).ShowLeaderboardUI("LeaderboardsCode");
                                 loadingObject.SetActive(false);
                                 EnableAllChilds();
                             });
                         });
 }

Thanks for the help in advance!