How to get artifacts from ContextProvider in web-panel?

[castus]

Could you help me to get an artifact from ContextProvider in web-panel? I tried the following code but I can't find any method with URL or some path to get it.

@Override
    public Map<String, Object> getContextMap(Map<String, Object> context) {
        final ImmutableJobImpl plan = (ImmutableJobImpl) context.get("plan");
        final BuildResultsSummaryImpl results = (BuildResultsSummaryImpl) context.get("resultSummary");

        List<ArtifactLink> artifacts = results.getProducedArtifactLinks();
        if (!artifacts.isEmpty()) {
            for (ArtifactLink item: artifacts) {
                 /// TODO: Get artifact contents (item.getArtifact()??)
            }
        }

        return context;
    }

Please help.