code: @Deprecated
      public void loginForImplicitGrant(@NonNull Activity activity) {
  
          if (!legacyUriRedirectHandler.checkValidState(activity, this)) {
              return;
          }
  
          Intent intent = LoginActivity.newIntent(activity, sessionConfiguration,
                  ResponseType.TOKEN, legacyUriRedirectHandler.isLegacyMode());
          activity.startActivityForResult(intent, requestCode);
      }
docs: Login using Implicit Grant (Webview)
  
  @param activity to start Activity on.