code: @Deprecated
      public static boolean uninstallAddOnFiles(AddOn addOn, AddOnUninstallationProgressCallback callback) {
          return uninstallAddOnFiles(addOn, callback, null);
      }
docs: Uninstalls the files of the given add-on.
  
  @param addOn the add-on
  @param callback the callback for notification of progress
  @return {@code true} if no error occurred while removing the files, {@code false} otherwise.
  @throws IllegalArgumentException if {@code addOn} or {@code callback} are null.
  @deprecated (TODO add version) Use {@link #uninstallAddOnFiles(AddOn, AddOnUninstallationProgressCallback, Set)} instead.