code: def get_parser(self):
          
          parser = self.parser_cls(prog=self.prog_name, usage=self.get_usage(),
              stream=self.stderr)
          subparsers = parser.add_subparsers(
              title='subcommands',
          )
          for name, command in self.registry.items():
              cmdparser = subparsers.add_parser(name, help=command.help)
              for argument in command.get_args():
                  cmdparser.add_argument(*argument.args, **argument.kwargs)
              command.setup_parser(parser, cmdparser)
              cmdparser.set_defaults(func=command.handle)
  
          return parser
docs: Returns :class:`monolith.cli.Parser` instance for this
          *ExecutionManager*.