def update_certificate_issuer(<EOL>self, vault_base_url, issuer_name, provider=None, credentials=None, organization_details=None, attributes=None, custom_headers=None, raw=False, **operation_config):
parameter = models.CertificateIssuerUpdateParameters(provider=provider, credentials=credentials, organization_details=organization_details, attributes=attributes)<EOL>url = self.update_certificate_issuer.metadata['<STR_LIT:url>']<EOL>path_format_arguments = {<EOL>'<STR_LIT>': self._serialize.url("<STR_LIT>", vault_base_url, '<STR_LIT:str>', skip_quote=True),<EOL>'<STR_LIT>': self._serialize.url("<STR_LIT>", issuer_name, '<STR_LIT:str>')<EOL>}<EOL>url = self._client.format_url(url, **path_format_arguments)<EOL>query_parameters = {}<EOL>query_parameters['<STR_LIT>'] = self._serialize.query("<STR_LIT>", self.api_version, '<STR_LIT:str>')<EOL>header_parameters = {}<EOL>header_parameters['<STR_LIT:Content-Type>'] = '<STR_LIT>'<EOL>if self.config.generate_client_request_id:<EOL><INDENT>header_parameters['<STR_LIT>'] = str(uuid.uuid1())<EOL><DEDENT>if custom_headers:<EOL><INDENT>header_parameters.update(custom_headers)<EOL><DEDENT>if self.config.accept_language is not None:<EOL><INDENT>header_parameters['<STR_LIT>'] = self._serialize.header("<STR_LIT>", self.config.accept_language, '<STR_LIT:str>')<EOL><DEDENT>body_content = self._serialize.body(parameter, '<STR_LIT>')<EOL>request = self._client.patch(url, query_parameters)<EOL>response = self._client.send(<EOL>request, header_parameters, body_content, stream=False, **operation_config)<EOL>if response.status_code not in [<NUM_LIT:200>]:<EOL><INDENT>raise models.KeyVaultErrorException(self._deserialize, response)<EOL><DEDENT>deserialized = None<EOL>if response.status_code == <NUM_LIT:200>:<EOL><INDENT>deserialized = self._deserialize('<STR_LIT>', response)<EOL><DEDENT>if raw:<EOL><INDENT>client_raw_response = ClientRawResponse(deserialized, response)<EOL>return client_raw_response<EOL><DEDENT>return deserialized<EOL>
Updates the specified certificate issuer.

        The UpdateCertificateIssuer operation performs an update on the
        specified certificate issuer entity. This operation requires the
        certificates/setissuers permission.

        :param vault_base_url: The vault name, for example
         https://myvault.vault.azure.net.
        :type vault_base_url: str
        :param issuer_name: The name of the issuer.
        :type issuer_name: str
        :param provider: The issuer provider.
        :type provider: str
        :param credentials: The credentials to be used for the issuer.
        :type credentials:
         ~azure.keyvault.v2016_10_01.models.IssuerCredentials
        :param organization_details: Details of the organization as provided
         to the issuer.
        :type organization_details:
         ~azure.keyvault.v2016_10_01.models.OrganizationDetails
        :param attributes: Attributes of the issuer object.
        :type attributes: ~azure.keyvault.v2016_10_01.models.IssuerAttributes
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: IssuerBundle or ClientRawResponse if raw=true
        :rtype: ~azure.keyvault.v2016_10_01.models.IssuerBundle or
         ~msrest.pipeline.ClientRawResponse
        :raises:
         :class:`KeyVaultErrorException<azure.keyvault.v2016_10_01.models.KeyVaultErrorException>`