func (s Schemas) Kinds() []string {
	kinds := sets.NewWithLength[string](len(s.byAddOrder))
	for _, s := range s.byAddOrder {
		kinds.Insert(s.Kind())
	}

	out := kinds.UnsortedList()
	return slices.Sort(out)
}

// Validate the schemas. Returns error if there is a problem.
func (s Schemas) Validate() (err error) {
	for _, c := range s.byAddOrder {
		err = multierror.Append(err, c.Validate()).ErrorOrNil()
	}
	return