protected String cleanParameters(String methodName) {
        int random = (int) (Math.random() * Integer.MAX_VALUE);
        return methodName.replaceAll("[0-9, -]+$", String.valueOf(random));
    }
Utility method to help produce an appropriate unique directory for a test. Designed to be called from
{@link #getBaseConfiguration(String, Class, String, LoadGraphWith.GraphData)} for those graph providers that
need a data directory for their {@link Graph} implementations.
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/AbstractGraphProvider.java