@Test
    @LoadGraphWith(LoadGraphWith.GraphData.MODERN)
    public void shouldNotHaveResidualDataInStorage() throws Exception {
        final Storage storage = SparkContextStorage.open(graph.configuration());
        final String outputLocation = graph.configuration().getString(Constants.GREMLIN_HADOOP_OUTPUT_LOCATION);
        super.checkResidualDataInStorage(storage, outputLocation);
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
spark-gremlin/src/test/java/org/apache/tinkerpop/gremlin/spark/structure/io/SparkContextStorageCheck.java