code: func (c *Cloud) configureInstanceSourceDestCheck(instanceID string, sourceDestCheck bool) error {
  	request := &ec2.ModifyInstanceAttributeInput{}
  	request.InstanceId = aws.String(instanceID)
  	request.SourceDestCheck = &ec2.AttributeBooleanValue{Value: aws.Bool(sourceDestCheck)}
  
  	_, err := c.ec2.ModifyInstanceAttribute(request)
  	if err != nil {
  		return fmt.Errorf("error configuring source-dest-check on instance %s: %q", instanceID, err)
  	}
  	return nil
  }
docs: // Sets the instance attribute "source-dest-check" to the specified value