@Override
        public void loadGraphData(final Graph graph, final LoadGraphWith loadGraphWith, final Class testClass, final String testName) {
            innerGraphProvider.loadGraphData(graph, loadGraphWith, testClass, testName);
        }
This class provides a way to intercepts calls to {@link Graph} implementation's {@link GraphProvider} instances.
When {@link #openTestGraph(Configuration)} is called the created object is stored in a list and when tests are
complete the {@link #tryClearGraphs()} is called. When this is called, an attempt is made to close all open graphs.
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/GraphManager.java