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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 _save_active_file(self):
 """ Saves current task information to active file. Example format:: active_task { name "task name"; start_time "2012-04-23 15:18:22"; } """


        _parser = parser.SettingParser()

        # add name
        _parser.add_option(None, 'name', common.to_utf8(self._name))

        # add start time
        start_time = self._start_time.strftime('%Y-%m-%d %H:%M:%S.%f')
        _parser.add_option(None, 'start_time', start_time)

        # write it to file
        return _parser.write(self._paths['active_file'],
                             self.HEADER_ACTIVE_FILE)