@FeatureDescriptor(name = FEATURE_ANY_IDS)
            default boolean supportsAnyIds() {
                return true;
            }
Determines if an {@link VertexProperty} any Java object is a suitable identifier.  Note that this
setting can only return true if {@link #supportsUserSuppliedIds()} is true.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/Graph.java