In Lab 6, I have set up the Friends connection with RTC (using 4.0.0.1) .. and in the Add Association dialog, my provider shows - but the Artifact Containers list was empty. Looking at the ref returned from my bugzilla adapter:
<?xml version="1.0" encoding="UTF-8" ?>
<rdf:RDF>
<rdf:Description rdf:nodeID="A0">
<oslc:prefix>oslc_cm</oslc:prefix>
</rdf:Description>
<dcterms:publisher rdf:nodeID="A1" />
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<oslc:prefix>foaf</oslc:prefix>
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<rdf:Description rdf:nodeID="A3">
<oslc:prefix>bugz</oslc:prefix>
</rdf:Description>
<rdf:Description rdf:nodeID="A4">
<oslc:label>Change Request Catalog Query</oslc:label>
</rdf:Description>
<rdf:Description rdf:nodeID="A5">
<oslc:label>Change Request Creation</oslc:label>
</rdf:Description>
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<oslc:prefix>oslc_qm</oslc:prefix>
</rdf:Description>
<rdf:Description rdf:nodeID="A1">
<dcterms:identifier>org.eclipse.lyo.oslc4j.bugzilla</dcterms:identifier>
</rdf:Description>
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<oslc:prefix>dcterms</oslc:prefix>
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<oslc:prefix>oslc</oslc:prefix>
</rdf:Description>
<rdf:Description rdf:nodeID="A9">
<dcterms:identifier>urn:oslc:ServiceProvider</dcterms:identifier>
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<rdf:Description rdf:nodeID="A10">
<oslc:prefix>oslc_data</oslc:prefix>
</rdf:Description>
<rdf:Description rdf:nodeID="A11">
<oslc:prefix>oslc_scm</oslc:prefix>
</rdf:Description>
<rdf:Description rdf:nodeID="A12">
<oslc:prefix>rdfs</oslc:prefix>
</rdf:Description>
<rdf:Description rdf:nodeID="A13">
<oslc:hintWidth>525px</oslc:hintWidth>
<oslc:hintHeight>325px</oslc:hintHeight>
<oslc:label>Change Request Selection Dialog</oslc:label>
</rdf:Description>
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<oslc:prefix>rdf</oslc:prefix>
</rdf:Description>
<oslc:prefixDefinition rdf:nodeID="A7" />
<dcterms:publisher rdf:nodeID="A9" />
<oslc:prefixDefinition rdf:nodeID="A6" />
<oslc:prefixDefinition rdf:nodeID="A2" />
<oslc:prefixDefinition rdf:nodeID="A3" />
<dcterms:identifier>1</dcterms:identifier>
<oslc:prefixDefinition rdf:nodeID="A0" />
<oslc:prefixDefinition rdf:nodeID="A11" />
<oslc:prefixDefinition rdf:nodeID="A15" />
<dcterms:created>2012-11-27T20:41:35.149+01:00</dcterms:created>
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<oslc:prefixDefinition rdf:nodeID="A14" />
<oslc:service rdf:nodeID="A16" />
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<oslc:prefixDefinition rdf:nodeID="A8" />
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<rdf:Description rdf:nodeID="A15">
<oslc:prefix>oslc_rm</oslc:prefix>
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<rdf:Description rdf:nodeID="A17">
<oslc:hintWidth>600px</oslc:hintWidth>
<oslc:hintHeight>375px</oslc:hintHeight>
<oslc:label>Change Request Creation Dialog</oslc:label>
</rdf:Description>
<rdf:Description rdf:nodeID="A16">
<oslc:selectionDialog rdf:nodeID="A13" />
<oslc:queryCapability rdf:nodeID="A4" />
<oslc:creationFactory rdf:nodeID="A5" />
<oslc:creationDialog rdf:nodeID="A17" />
</rdf:Description>
</rdf:RDF>