@Test
    public void testExplicitRouteNotOverridden() {
        VisitorParameters visitorParameters = createVisitorParameters("");
        visitorParameters.setRoute("mars");
        RoutingTable table = createDummyRoutingTable();

        createDefaultMock(visitorParameters, table);
        assertEquals("mars", visitorParameters.getRoute().toString());
    }
Test that we don't try to override a valid route in the parameters.
documentapi/src/test/java/com/yahoo/documentapi/messagebus/MessageBusVisitorSessionTestCase.java