code: def register_file(self, file):
          
  
          not self.__engine.file_system_events_manager.is_path_registered(file) and \
          self.__engine.file_system_events_manager.register_path(file)
          return True
docs: Registers given file in the **file_system_events_manager**.
  
          :param file: File.
          :type file: unicode
          :return: Method success.
          :rtype: bool