MatchNamespace returns a generic matcher for a given label and field selector.

NamespaceToSelectableFields returns a label set that represents the object TODO: fields are not labels, and the validation rules for them do not apply.

NewRegistry returns a new Registry interface for the given Storage.

Strategy is the default logic that applies when creating and updating Namespace objects via the REST API.

Registry is an interface implemented by things that know how to store Namespace objects.