@Override
        public CustomId createObject(final Map data) {
            return new CustomId((String) data.get("cluster"), (UUID) data.get("elementId"));
        }
A mock identifier for use in ensuring that custom serializers work around element identifiers.

@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/structure/io/util/CustomId.java