def certificates(self):
        """
        A list of certificates used to help build a chain to verify the OCSP
        response. This situation occurs when the OCSP responder uses a delegate
        certificate.
        """

        A list of certificates used to help build a chain to verify the OCSP
        response. This situation occurs when the OCSP responder uses a delegate
        certificate.
        
stackoverflow/venv/lib/python3.6/site-packages/cryptography/x509/ocsp.py