Jan created TINKERPOP-3058:
------------------------------

             Summary: StackOverFlowError when using `or` in Custom Gremlin DSL
                 Key: TINKERPOP-3058
                 URL: https://issues.apache.org/jira/browse/TINKERPOP-3058
             Project: TinkerPop
          Issue Type: Bug
          Components: tinkergraph
    Affects Versions: 3.6.4
            Reporter: Jan


Implementing our own 
[GremlinDSL|https://tinkerpop.apache.org/docs/current/reference/#gremlin-java-dsl]
 we encounter a `StackoverFlowError` as soon as we use `or` in the @GremlinDsl 
interface.

The same condition works fine if defined directly in the query.
It also works as soon as we remove the or from the condition.
{code:java}
@GremlinDsl(traversalSource = "com.corp.foo.gremlin.CustomGraphTraversalSource")
public interface CustomTraversalDsl<S, E> extends GraphTraversal.Admin<S, E> {

    default GraphTraversal<S, Vertex> outWithOr() {
        return out()
            .or(
                has("key"),
                has("key", false)
            );
    }

    default GraphTraversal<S, Vertex> outWithoutOr() {
        return out()
            .has("key")
            .has("key", false);
    }
}

g.V().where(outWithoutOr()).next(); -> works fine 
g.V().where(out().or(has("key"), has("key", false))).next() -> works fine

g.V().where(outWithOr()).next(); -> 

java.lang.StackOverflowError
        at 
org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.hasStepOfAssignableClass(TraversalHelper.java:349)
        at 
org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration.ConnectiveStrategy.apply(ConnectiveStrategy.java:63)
        at 
org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.applyTraversalRecursively(TraversalHelper.java:503)
        at 
org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.applyTraversalRecursively(TraversalHelper.java:491){code}
 



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