def from_cryptography(cls, crypto_cert):
        """
        Construct based on a ``cryptography`` *crypto_cert*.

        :param crypto_key: A ``cryptography`` X.509 certificate.
        :type crypto_key: ``cryptography.x509.Certificate``

        :rtype: X509

        .. versionadded:: 17.1.0
        """
        if not isinstance(crypto_cert, x509.Certificate):
            raise TypeError("Must be a certificate")

        cert = cls()
        cert._x509 = crypto_cert._x509
        return cert
Construct based on a ``cryptography`` *crypto_cert*.

        :param crypto_key: A ``cryptography`` X.509 certificate.
        :type crypto_key: ``cryptography.x509.Certificate``

        :rtype: X509

        .. versionadded:: 17.1.0