@Override
        public String getTypeNamespace() {
            return "tinker";
        }
Provides a method to serialize an entire {@link TinkerGraph} into itself for GraphSON. This is useful when
shipping small graphs around through Gremlin Server.
tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/TinkerIoRegistryV2.java