code: func (c *Redshift) DescribeOrderableClusterOptions(input *DescribeOrderableClusterOptionsInput) (*DescribeOrderableClusterOptionsOutput, error) {
  	req, out := c.DescribeOrderableClusterOptionsRequest(input)
  	return out, req.Send()
  }
docs: // DescribeOrderableClusterOptions API operation for Amazon Redshift.
  //
  // Returns a list of orderable cluster options. Before you create a new cluster
  // you can use this operation to find what options are available, such as the
  // EC2 Availability Zones (AZ) in the specific AWS Region that you can specify,
  // and the node types you can request. The node types differ by available storage,
  // memory, CPU and price. With the cost involved you might want to obtain a
  // list of cluster options in the specific region and specify values when creating
  // a cluster. For more information about managing clusters, go to Amazon Redshift
  // Clusters (https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html)
  // in the Amazon Redshift Cluster Management Guide.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for Amazon Redshift's
  // API operation DescribeOrderableClusterOptions for usage and error information.
  // See also, https://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/DescribeOrderableClusterOptions