public static GraphProvider setGraphProvider(final GraphProvider graphProvider) {
        final GraphProvider old = GraphManager.graphProvider;
        GraphManager.graphProvider = graphProvider;
        return old;
    }
Holds objects specified by the test suites supplying them in a static manner to the test cases.

@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/GraphManager.java