@staticmethod
    def _get_ssl_version(values):
        version = values.get('ssl_version', [None])[0]
        if version is None:
            return None
        if version not in SSL_VERSION_MAP:
            raise ValueError('Unuspported SSL version: %s' % version)
        return SSL_VERSION_MAP[version]
Return the value mapped from the string value in the query string
dataset/ETHPy150Open gmr/rabbitpy/rabbitpy/connection.py/Connection._get_ssl_version