@Override
            public java.util.UUID getNextId(final AbstractTinkerGraph graph) {
                return java.util.UUID.randomUUID();
            }
Manages identifiers of type {@code UUID}. Will convert {@code String} values to
{@code UUID}.
tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/AbstractTinkerGraph.java