code: private static File[] filterFilesBySuffix(final File dirToFilter, final String suffix) {
  		return filterFilesBySuffix(dirToFilter, new String[] { suffix });
  	}
docs: Filters files in directory which have the specified suffix (e.g. ".xml").
  
  @param dirToFilter
  directory to filter
  @param suffix
  suffix to filter files by (e.g. ".xml")
  @return files with given ending in directory