Package controller provides Registry interface and it's RESTStorage implementation for storing ReplicationController api objects.
Strategy is the default logic that applies when creating and updating Replication Controller objects.
ControllerToSelectableFields returns a field set that represents the object.
GetAttrs returns labels and fields of a given object for filtering purposes.
MatchController is the filter used by the generic etcd backend to route watch events from etcd to clients of the apiserver only interested in specific labels/fields.