code: def add_arguments(self, parser, bootstrap=False):
          
          [item.add_argument(parser, bootstrap)
           for item in self._get_items(bootstrap=False)]
docs: Adds all items to the parser passed in.
  
          Args:
              parser (argparse.ArgumentParser): The parser to add all items to.
              bootstrap (bool): Flag to indicate whether you only want to mark
                  bootstrapped items as required on the command-line.