tinkerpop/blueprints — pull request #383 by asaf (2013-04-08 13:53:19+00:00)
Title: Tinkergraph: Remove Vertex's label Set after last edge removal.

Hey,
Please take a look at this patch, I'm not sure whether this is the right approach,
But if the last edge associated with a vertex is deleted, the Set-per-label of associated edges continue to exit and show false results.

Thanks.