Targeting named graphs

[oco-adam]

Hi, apologies if I'm missing something, but I can't see how to target a named Graph using this library.

e.g. is it possible to generate a query like:

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT  ?name
FROM    <http://example.org/foaf/aliceFoaf>
WHERE   { ?x foaf:name ?name }

where <http://example.org/foaf/aliceFoaf> identifies the named graph.

Has this been implemented, or could someone please suggest a workaround?