@Override
        public void serializeWithType(final Traversal traversal, final JsonGenerator jsonGenerator, final SerializerProvider serializerProvider, final TypeSerializer typeSerializer)
                throws IOException {
            serialize(traversal, jsonGenerator, serializerProvider);
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/io/graphson/TraversalSerializersV2.java