DotUtils { public static File dot2pdf(final File file) throws CelloException { File rtn = null; rtn = dot2any(file, S_PDF); return rtn; }  static File dot2pdf(final File file); static File dot2png(final File file);  }
@Test public void test() throws CelloException, IOException { File dot = dotFile(); File output = DotUtils.dot2pdf(dot); output.deleteOnExit(); }