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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 _update_cinder_config(cls):
 """Parse in-memory file to update OSLO configuration used by Cinder."""

        cls._config_string_io.seek(0)
        cls._parser.write(cls._config_string_io)

        # Check if we have any multiopt
        cls._config_string_io.seek(0)
        current_cfg = cls._config_string_io.read()
        if '\n\t' in current_cfg:
            cls._config_string_io.seek(0)
            cls._config_string_io.write(current_cfg.replace('\n\t', '\n'))

        cls._config_string_io.seek(0)
        cfg.CONF.reload_config_files()