How to use the fire.decorators function in fire

Path(config.history_path).unlink()
                    elif cli_args:
                        getattr(chepy_cli, cli_method)(
                            fire_obj, **{cli_args.group(1): cli_args.group(2)}
                        )
                    else:
                        getattr(chepy_cli, cli_method)(fire_obj)

                else:
                    for method in chepy:
                        if not method.startswith("_") and not isinstance(
                            getattr(Chepy, method), property
                        ):
                            fire.decorators._SetMetadata(
                                getattr(Chepy, method),
                                fire.decorators.ACCEPTS_POSITIONAL_ARGS,
                                False,
                            )
                    args_data += prompt.split()
                    if args_data[-1] != "-":
                        args_data.append("-")
                    try:
                        last_command = prompt.split() + ["-"]
                        fire_obj = fire.Fire(Chepy, command=args_data)
                    # handle required args for methods
                    except fire.core.FireExit:
                        args_data = args_data[: -len(last_command)]
                    except TypeError as e:
                        print(red(e.message))
                    except SystemExit:
                        sys.exit()
                    except:

# Delete the cli history file
                    elif cli_method == "cli_delete_history":
                        Path(config.history_path).unlink()
                    elif cli_args:
                        getattr(chepy_cli, cli_method)(
                            fire_obj, **{cli_args.group(1): cli_args.group(2)}
                        )
                    else:
                        getattr(chepy_cli, cli_method)(fire_obj)

                else:
                    for method in chepy:
                        if not method.startswith("_") and not isinstance(
                            getattr(Chepy, method), property
                        ):
                            fire.decorators._SetMetadata(
                                getattr(Chepy, method),
                                fire.decorators.ACCEPTS_POSITIONAL_ARGS,
                                False,
                            )
                    args_data += prompt.split()
                    if args_data[-1] != "-":
                        args_data.append("-")
                    try:
                        last_command = prompt.split() + ["-"]
                        fire_obj = fire.Fire(Chepy, command=args_data)
                    # handle required args for methods
                    except fire.core.FireExit:
                        args_data = args_data[: -len(last_command)]
                    except TypeError as e:
                        print(red(e.message))
                    except SystemExit:

argspec. This is the number of arguments without a default value.
    kwargs: Dict with named command line arguments and their values.
    remaining_args: The remaining command line arguments, which may still be
        used as positional arguments.
    metadata: Metadata about the function, typically from Fire decorators.
  Returns:
    parsed_args: A list of values to be used as positional arguments for calling
        the target function.
    kwargs: The input dict kwargs modified with the used kwargs removed.
    remaining_args: A list of the supplied args that have not been used yet.
    capacity: Whether the call could have taken args in place of defaults.
  Raises:
    FireError: If additional positional arguments are expected, but none are
        available.
  """
  accepts_positional_args = metadata.get(decorators.ACCEPTS_POSITIONAL_ARGS)
  capacity = False  # If we see a default get used, we'll set capacity to True

  # Select unnamed args.
  parsed_args = []
  for index, arg in enumerate(fn_args):
    value = kwargs.pop(arg, None)
    if value is not None:  # A value is specified at the command line.
      value = _ParseValue(value, index, arg, metadata)
      parsed_args.append(value)
    else:  # No value has been explicitly specified.
      if remaining_args and accepts_positional_args:
        # Use a positional arg.
        value = remaining_args.pop(0)
        value = _ParseValue(value, index, arg, metadata)
        parsed_args.append(value)
      elif index < num_required_args:

"""Parses value, a string, into the appropriate type.

  The function used to parse value is determined by the remaining arguments.

  Args:
    value: The string value to be parsed, typically a command line argument.
    index: The index of the value in the function's argspec.
    arg: The name of the argument the value is being parsed for.
    metadata: Metadata about the function, typically from Fire decorators.
  Returns:
    value, parsed into the appropriate type for calling a function.
  """
  parse_fn = parser.DefaultParseValue

  # We check to see if any parse function from the fn metadata applies here.
  parse_fns = metadata.get(decorators.FIRE_PARSE_FNS)
  if parse_fns:
    default = parse_fns['default']
    positional = parse_fns['positional']
    named = parse_fns['named']

    if index is not None and 0 <= index < len(positional):
      parse_fn = positional[index]
    elif arg in named:
      parse_fn = named[arg]
    elif default is not None:
      parse_fn = default

  return parse_fn(value)