code: private AndroidApp augmentApp(AndroidApp app, SelendroidCapabilities desiredCapabilities) {
      if (desiredCapabilities.getLaunchActivity() != null) {
        app.setMainActivity(desiredCapabilities.getLaunchActivity());
      }
      return app;
    }
docs: Augment the application with parameters from {@code desiredCapabilities}
  
  @param app                 to be augmented
  @param desiredCapabilities configuration requested for this session