@Test
    void testRequireClusterOptionIfMultipleClusters() {
        List<ClusterDef> clusterDefs = new ArrayList<>();
        clusterDefs.add(new ClusterDef("storage"));
        clusterDefs.add(new ClusterDef("storage2"));
        ClusterList clusterList = new ClusterList(clusterDefs);
        try {
            VdsVisit.resolveClusterRoute(clusterList, null);
        } catch (IllegalArgumentException e) {
            assertTrue(e.getMessage().contains("Please use the -c option to select one of them"));
        }
    }
Test the parameters that could not be used in conjunction with
those in the first parameter test.
vespaclient-java/src/test/java/com/yahoo/vespavisit/VdsVisitTestCase.java