def verify_certificate_issuer(self, certificate_issuer_id, **kwargs):  # noqa: E501
        """Verify certificate issuer.  # noqa: E501

        A utility API that can be used to validate the user configuration before activating a certificate issuer. Verifies that the certificate issuer is accessible and can be used to generate certificates by Device Management. <br> **Note:** The API requests the 3rd party CA to sign a test certificate. For some 3rd party CAs, this operation may make use of the account quota. <br> **Example usage:**  ``` curl -X POST \\ -H 'authorization: <valid access token>' \\ -H 'content-type: application/json;charset=UTF-8' \\ https://api.us-east-1.mbedcloud.com/v3/certificate-issuers/01621a36719d507b9d48a91b00000000/verify ```   # noqa: E501
        This method makes a synchronous HTTP request by default. To make an
        asynchronous HTTP request, please pass asynchronous=True
        >>> thread = api.verify_certificate_issuer(certificate_issuer_id, asynchronous=True)
        >>> result = thread.get()

        :param asynchronous bool
        :param str certificate_issuer_id: Certificate issuer ID. <br> The ID of the certificate issuer.  (required)
        :return: CertificateIssuerVerifyResponse
                 If the method is called asynchronously,
                 returns the request thread.
        """
        kwargs['_return_http_data_only'] = True
        if kwargs.get('asynchronous'):
            return self.verify_certificate_issuer_with_http_info(certificate_issuer_id, **kwargs)  # noqa: E501
        else:
            (data) = self.verify_certificate_issuer_with_http_info(certificate_issuer_id, **kwargs)  # noqa: E501
            return data