Files.createSymbolicLink(symlink, fs.getRootDirectories().iterator().next());
      Path file = symlink.resolve("foo");
      MoreFiles.createParentDirectories(file);
    }
  }

  public void testGetFileExtension() {
    assertEquals("txt", MoreFiles.getFileExtension(FS.getPath(".txt")));
    assertEquals("txt", MoreFiles.getFileExtension(FS.getPath("blah.txt")));