code: func (c *CloudFormation) StopStackSetOperation(input *StopStackSetOperationInput) (*StopStackSetOperationOutput, error) {
  	req, out := c.StopStackSetOperationRequest(input)
  	return out, req.Send()
  }
docs: // StopStackSetOperation API operation for AWS CloudFormation.
  //
  // Stops an in-progress operation on a stack set and its associated stack instances.
  //
  // 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 StopStackSetOperation for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeStackSetNotFoundException "StackSetNotFoundException"
  //   The specified stack set doesn't exist.
  //
  //   * ErrCodeOperationNotFoundException "OperationNotFoundException"
  //   The specified ID refers to an operation that doesn't exist.
  //
  //   * ErrCodeInvalidOperationException "InvalidOperationException"
  //   The specified operation isn't valid.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/StopStackSetOperation