How to use the @glimmer/reference.UpdatableRootReference function in @glimmer/reference

getSelf(context: unknown): UpdatableRootReference {
    if (!this.self) {
      this.self = new UpdatableRootReference(context);
    }

    return this.self;
  }

function getSelf(obj: EmberishGlimmerComponent): UpdatableRootReference {
  if (SELF_REF.has(obj)) {
    return SELF_REF.get(obj)!;
  } else {
    let ref = new UpdatableRootReference(obj);
    SELF_REF.set(obj, ref);
    return ref;
  }
}

getSelf(component: BasicComponent): VersionedPathReference {
    return new UpdatableRootReference(component);
  }