@staticmethod
def __is_key_value_v1(read_response, secret_key):
    """
        Checks if the response is from the key value v1 secret engine.
        See https://www.vaultproject.io/api/secret/kv/kv-v1.html#sample-response-1
        Args:
            - read_response: response from HVAC read function
            - secret_key: secret key being retrieved
        Returns:
            Bool
        """
    return isinstance(read_response.get('data', {}).get(secret_key, {}), str)
