new WriterSuffixFilter(fileSuffix));
new WriterSuffixFilter(fileSuffix), fileSuffix);
  public static Iterator getImageWritersBySuffix(String fileSuffix)  {    if (fileSuffix == null)      throw new IllegalArgumentException("fileSuffix may not be null");        return getWritersByFilter(ImageWriterSpi.class,                              new WriterSuffixFilter(fileSuffix));  }