public Builder referenceTracking(final boolean referenceTracking) {
            this.referenceTracking = referenceTracking;
            return this;
        }
By default, each appearance of an object in the graph after the first is stored as an integer ordinal.
This allows multiple references to the same object and cyclic graphs to be serialized. This has a small
amount of overhead and can be disabled to save space if it is not needed.

@param referenceTracking set to {@code true} to enable and {@code false} otherwise
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/io/gryo/GryoMapper.java