public Collection listMembers(URL baseUrl,
    String patterns) throws IOException 
{
      return listMembers (baseUrl, patterns, false);
}

 public Collection listMembers(URL baseUrl,
    String patterns,
    boolean scanNonDottedSubDirs) throws IOException 
{
      // @todo, externalize the separator?
      StringTokenizer tokens = new StringTokenizer (patterns, ",");
      String[] members = new String[tokens.countTokens ()];
      for (int i=0; tokens.hasMoreTokens (); i++)
      {
         String token = tokens.nextToken ();
         // Trim leading/trailing spaces as its unlikely they are meaningful
         members[i] = token.trim();
      }
      URLFilter filter = new URLFilterImpl (members);
      return listMembers (baseUrl, filter, scanNonDottedSubDirs);
}