def update_certificate_issuer_config(self, certificate_issuer_config_request, **kwargs):  # noqa: E501
        """Update certificate issuer configuration.  # noqa: E501

        Configure the certificate issuer to be used when creating device certificates for LwM2M communication. <br> **Example usage:**  ``` curl -X PUT \\ -H 'authorization: <valid access token>' \\ -H 'content-type: application/json;charset=UTF-8' \\ https://api.us-east-1.mbedcloud.com/v3/certificate-issuer-configurations/lwm2m \\ -d '{   \"certificate_issuer_id\": \"01621a36719d507b9d48a91b00000000\" }' ```   # noqa: E501
        This method makes a synchronous HTTP request by default. To make an
        asynchronous HTTP request, please pass asynchronous=True
        >>> thread = api.update_certificate_issuer_config(certificate_issuer_config_request, asynchronous=True)
        >>> result = thread.get()

        :param asynchronous bool
        :param CertificateIssuerConfigRequest certificate_issuer_config_request: Certificate Issuer Configuration Request (required)
        :return: CertificateIssuerConfigResponse
                 If the method is called asynchronously,
                 returns the request thread.
        """
        kwargs['_return_http_data_only'] = True
        if kwargs.get('asynchronous'):
            return self.update_certificate_issuer_config_with_http_info(certificate_issuer_config_request, **kwargs)  # noqa: E501
        else:
            (data) = self.update_certificate_issuer_config_with_http_info(certificate_issuer_config_request, **kwargs)  # noqa: E501
            return data