code: func (c *Redshift) ModifyClusterMaintenance(input *ModifyClusterMaintenanceInput) (*ModifyClusterMaintenanceOutput, error) {
  	req, out := c.ModifyClusterMaintenanceRequest(input)
  	return out, req.Send()
  }
docs: // ModifyClusterMaintenance API operation for Amazon Redshift.
  //
  // Modifies the maintenance settings of a cluster. For example, you can defer
  // a maintenance window. You can also update or cancel a deferment.
  //
  // 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 ModifyClusterMaintenance for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeClusterNotFoundFault "ClusterNotFound"
  //   The ClusterIdentifier parameter does not refer to an existing cluster.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/ModifyClusterMaintenance