Github user spmallette commented on the pull request:
https://github.com/apache/incubator-tinkerpop/pull/271#issuecomment-201478009
@PommeVerte noticed that neo4j tests are failing around this tree work:
```text
org.apache.tinkerpop.gremlin.neo4j.structure.MultiMetaNeo4jGraphStructureStandardTest
13:16:45
shouldSerializeTree(org.apache.tinkerpop.gremlin.structure.SerializationTest$GraphSONTest)
Time elapsed: 0.233 sec <<< FAILURE!
13:16:45 java.lang.AssertionError: expected:<1> but was:<0>
13:16:45 at org.junit.Assert.fail(Assert.java:88)
13:16:45 at org.junit.Assert.failNotEquals(Assert.java:834)
13:16:45 at org.junit.Assert.assertEquals(Assert.java:645)
13:16:45 at org.junit.Assert.assertEquals(Assert.java:631)
13:16:45 at
org.apache.tinkerpop.gremlin.structure.SerializationTest$GraphSONTest.shouldSerializeTree(SerializationTest.java:385)
```
Can you please take a look?
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