code: public static List<File> createTiffFiles(List<IIOImage> imageList, int index) throws IOException {
          return createTiffFiles(imageList, index, 0, 0);
      }
docs: Creates a list of TIFF image files from a list of <code>IIOImage</code>
  objects.
  
  @param imageList a list of <code>IIOImage</code> objects
  @param index an index of the page; -1 means all pages
  @return a list of TIFF image files
  @throws IOException