code: def add_argument(self, parser, bootstrap=False):
          
          if self.cli_expose:
              args = self._get_argparse_names(parser.prefix_chars)
              kwargs = self._get_argparse_kwargs(bootstrap)
              parser.add_argument(*args, **kwargs)
docs: Add this item as an argument to the given parser.
  
          Args:
              parser (argparse.ArgumentParser): The parser to add this item to.
              bootstrap: Flag to indicate whether you only want to mark this
                  item as required or not