code: private List<File> getConfigFiles(File dir) {
  		String[] extensions = { "xml" };
  		List<File> configFiles = new ArrayList<File>();
  
  		Collection<File> files = FileUtils.listFiles(dir, extensions, true);
  		for (Iterator<File> iterator = files.iterator(); iterator.hasNext();) {
  			File file = (File) iterator.next();
  			if (file.getName().equals("config.xml")) {
  				configFiles.add(file);
  			}
  
  		}
  		return configFiles;
  	}
docs: Returns the all config file found under a directory
  
  @param dir
  @return A list of files found. Length = 0 if not found files.