s.shas = make(map[kubeResourceKey]resourceSha)
	s.byFile = make(map[string]map[kubeResourceKey]config.GroupVersionKind)
	s.inner = memory.MakeSkipValidation(*s.schemas)
}

// ContentNames returns the names known to this source.
func (s *KubeSource) ContentNames() map[string]struct{} {
	s.mu.Lock()
	defer s.mu.Unlock()

	result := sets.New[string]()
	for n := range s.byFile {
		result.Insert(n)
	}

	return result