How to use the azure-mgmt-media.azure.mgmt.media.models.ContentKeyPolicy function in azure-mgmt-media

:param options: The Key Policy options.
        :type options: list[~azure.mgmt.media.models.ContentKeyPolicyOption]
        :param description: A description for the Policy.
        :type description: str
        :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`.
        :return: ContentKeyPolicy or ClientRawResponse if raw=true
        :rtype: ~azure.mgmt.media.models.ContentKeyPolicy or
         ~msrest.pipeline.ClientRawResponse
        :raises:
         :class:`ApiErrorException`
        """
        parameters = models.ContentKeyPolicy(description=description, options=options)

        # Construct URL
        url = self.update.metadata['url']
        path_format_arguments = {
            'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str'),
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'accountName': self._serialize.url("account_name", account_name, 'str'),
            'contentKeyPolicyName': self._serialize.url("content_key_policy_name", content_key_policy_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}
        query_parameters['api-version'] = self._serialize.query("self.api_version", self.api_version, 'str')

        # Construct headers

:param options: The Key Policy options.
        :type options: list[~azure.mgmt.media.models.ContentKeyPolicyOption]
        :param description: A description for the Policy.
        :type description: str
        :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`.
        :return: ContentKeyPolicy or ClientRawResponse if raw=true
        :rtype: ~azure.mgmt.media.models.ContentKeyPolicy or
         ~msrest.pipeline.ClientRawResponse
        :raises:
         :class:`ApiErrorException`
        """
        parameters = models.ContentKeyPolicy(description=description, options=options)

        # Construct URL
        url = self.create_or_update.metadata['url']
        path_format_arguments = {
            'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str'),
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'accountName': self._serialize.url("account_name", account_name, 'str'),
            'contentKeyPolicyName': self._serialize.url("content_key_policy_name", content_key_policy_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}
        query_parameters['api-version'] = self._serialize.query("self.api_version", self.api_version, 'str')

        # Construct headers