code: func (c *CloudFormation) SetStackPolicy(input *SetStackPolicyInput) (*SetStackPolicyOutput, error) {
  	req, out := c.SetStackPolicyRequest(input)
  	return out, req.Send()
  }
docs: // SetStackPolicy API operation for AWS CloudFormation.
  //
  // Sets a stack policy for a specified stack.
  //
  // 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 AWS CloudFormation's
  // API operation SetStackPolicy for usage and error information.
  // See also, https://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/SetStackPolicy