How to use the jsonargparse.Path.get_content function in jsonargparse

for action in self._actions:
                if action.default != SUPPRESS and action.dest != SUPPRESS:
                    if isinstance(action, ActionParser):
                        cfg.update(namespace_to_dict(action._parser.get_defaults(nested=False)))
                    else:
                        cfg[action.dest] = action.default

            cfg = namespace_to_dict(_dict_to_flat_namespace(cfg))

            self._logger.info('Loaded default values from parser.')

            default_config_files = []  # type: List[str]
            for pattern in self._default_config_files:
                default_config_files += glob.glob(os.path.expanduser(pattern))
            if len(default_config_files) > 0:
                default_config = Path(default_config_files[0], mode=config_read_mode).get_content()
                cfg_file = self._load_cfg(default_config)
                cfg = self._merge_config(cfg_file, cfg)
                self._logger.info('Parsed configuration from default path: %s', default_config_files[0])

            if nested:
                cfg = _flat_namespace_to_dict(SimpleNamespace(**cfg))

        except TypeError as ex:
            self.error(str(ex))

        return dict_to_namespace(cfg)