List<String> additionalClasspathPaths() {
    String additionalClasspathPathsString = loadProperty("dropship.additional-paths");
    if (additionalClasspathPathsString != null) {
      List<String> paths = new ArrayList<String>();
      Scanner tokenizer = new Scanner(additionalClasspathPathsString).useDelimiter(",");
      while (tokenizer.hasNext()) {
        paths.add(tokenizer.next());
      }
      return paths;
    } else {
      return new LinkedList<String>();
    }
  }