docs: func (s *ListStackResourcesInput) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "ListStackResourcesInput"}
  	if s.NextToken != nil && len(*s.NextToken) < 1 {
  		invalidParams.Add(request.NewErrParamMinLen("NextToken", 1))
  	}
  	if s.StackName == nil {
  		invalidParams.Add(request.NewErrParamRequired("StackName"))
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }