@FeatureDescriptor(name = FEATURE_CONCURRENT_ACCESS)
            default boolean supportsConcurrentAccess() {
                return true;
            }
Determines if the {@code Graph} implementation supports more than one connection to the same instance
at the same time.  For example, Neo4j embedded does not support this feature because concurrent
access to the same database files by multiple instances is not possible.  However, Neo4j HA could
support this feature as each new {@code Graph} instance coordinates with the Neo4j cluster allowing
multiple instances to operate on the same database.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/Graph.java