code: @Implementation(minSdk = LOLLIPOP_MR1)
    protected Drawable loadUnbadgedItemIcon(PackageItemInfo itemInfo, ApplicationInfo appInfo) {
      Drawable result = unbadgedApplicationIcons.get(itemInfo.packageName);
      if (result != null) {
        return result;
      }
      return Shadow.directlyOn(realObject, ApplicationPackageManager.class)
          .loadUnbadgedItemIcon(itemInfo, appInfo);
    }
docs: Gets the unbadged icon based on the values set by {@link
  ShadowPackageManager#setUnbadgedApplicationIcon} or returns null if nothing has been set.