MOF26 — MOF Facility Object Lifecycle (FOL) 2.0: Is there a URIStor or not?

The figure in section 6.2 shows a URIStore class with two broken lines (associations? Generalizations? Something else?)
There is no entry for URIStore in the spec but there is a reference to it in 6.2.1.3:

Facility::createStore(name : String, contextURI : String[0..1], ….)

The description of the contextURI parameter says:

The URI to be used to address this Store. If specified, an instance of URIStore will be created.

So, is there a URIStore metaclass in MOF FOL or not?