Michael, Regarding this JIRA ticket: https://issues.apache.org/jira/browse/TINKERPOP3-850
There is this PR: https://github.com/apache/incubator-tinkerpop/pull/102 I wanted to make sure that the changes to Graph.addVertex would satisfy gremlin-scala. This is a breaking change for implementers, changing the signature of the abstract addVertex method which all of the other overloads use. Feel free to comment on the PR or on this thread. Regards, Matt