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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def group_dict(self, group: str) -> Dict[str, Any]: """The names and values of options in a group. Useful for copying options into Application settings:: from tornado.options import define, parse_command_line, options define('template_path', group='application') define('static_path', group='application') parse_command_line() application = Application( handlers, **options.group_dict('application')) .. versionadded:: 3.1 """

        return dict(
            (opt.name, opt.value())
            for name, opt in self._options.items()
            if not group or group == opt.group_name
        )