static L<S> myClasses() {
  ClassLoader loader = myClassLoader();
  L<File> files = cast getOpt(loader, "files");
  if (files == null)
    fail("No classes info (please run #1001639!)");
  new L<S> classes;
  for (File dir : files) {
    if (dir.isDirectory()) {
      for (File f : listFiles(dir)) {
        S s = f.getName();
        if (s.endsWith(".class"))
          classes.add(dropSuffix(".class", s));
      }
    }
  }
  ret classes;
}