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

GetAttrs returns labels and fields of a given object for filtering purposes.

MatchEndpoints 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 Endpoint objects via the REST API.

Registry is an interface for things that know how to store endpoints.