How to use the azure-mgmt-batchai.azure.mgmt.batchai.models.ClusterUpdateParameters function in azure-mgmt-batchai

alphanumeric characters along with dash (-) and underscore (_). The
         name must be from 1 through 64 characters long.
        :type cluster_name: str
        :param scale_settings: Desired scale for the cluster
        :type scale_settings: ~azure.mgmt.batchai.models.ScaleSettings
        :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: Cluster or ClientRawResponse if raw=true
        :rtype: ~azure.mgmt.batchai.models.Cluster or
         ~msrest.pipeline.ClientRawResponse
        :raises: :class:`CloudError`
        """
        parameters = models.ClusterUpdateParameters(scale_settings=scale_settings)

        # Construct URL
        url = self.update.metadata['url']
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', pattern=r'^[-\w\._]+$'),
            'workspaceName': self._serialize.url("workspace_name", workspace_name, 'str', max_length=64, min_length=1, pattern=r'^[-\w_]+$'),
            'clusterName': self._serialize.url("cluster_name", cluster_name, 'str', max_length=64, min_length=1, pattern=r'^[-\w_]+$'),
            'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, '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