IdentityToSelectableFields returns a label set that represents the object.

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

NewRegistry returns a new Registry interface for the given Storage.

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

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

Storage is an interface for a standard REST Storage backend TODO: move me somewhere common.