final PermissionCollection readClassPathFiles =
        new FilePermission("", "read").newPermissionCollection();
    for (URL url : ClassPath.parseJavaClassPath()) {
      if (url.getProtocol().equalsIgnoreCase("file")) {
        file = new File(url.toURI());
        readClassPathFiles.add(new FilePermission(file.getAbsolutePath(), "read"));
      }
    }
    assertThat(file).isNotNull();