code: def find_files(self, word):
          
          base_path, last_path, position = parse_path(word)
          paths = suggest_path(word)
          for name in sorted(paths):
              suggestion = complete_path(name, last_path)
              if suggestion:
                  yield Completion(suggestion, position)
docs: Yield matching directory or file names.
          :param word:
          :return: iterable