assertTrue(emptyColl,getHb().findCGCPaths(test,false).size()==0);
    public void testNulls(){        Set test = new HashSet();        test.add(new Integer(-1)); // Non-existence set of ids        int nonExp = -1; // Non-existence experimenter ID        //        assertTrue(emptyColl,getHb().findDatasetAnnotations(test).size()==0);        assertTrue(emptyColl,getHb().findDatasetAnnotations(new HashSet()).size()==0);        //        assertTrue(emptyColl,getHb().findDatasetAnnotationsForExperimenter(test,nonExp).size()==0);        assertTrue(emptyColl,getHb().findDatasetAnnotationsForExperimenter(new HashSet(),nonExp).size()==0);        //        assertTrue(emptyColl,getHb().findImageAnnotations(test).size()==0);        assertTrue(emptyColl,getHb().findImageAnnotations(new HashSet()).size()==0);        //        assertTrue(emptyColl,getHb().findImageAnnotationsForExperimenter(test,nonExp).size()==0);        assertTrue(emptyColl,getHb().findImageAnnotationsForExperimenter(new HashSet(),nonExp).size()==0);        //        assertTrue(emptyColl,getHb().findPDIHierarchies(test).size()==0);        assertTrue(emptyColl,getHb().findPDIHierarchies(new HashSet()).size()==0);        //        assertTrue(emptyColl,getHb().findCGCIHierarchies(test).size()==0);        assertTrue(emptyColl,getHb().findCGCIHierarchies(new HashSet()).size()==0);        //        assertNull(nullObj,getHb().loadCGCIHierarchy(CategoryGroup.class, 0));        assertNull(nullObj,getHb().loadCGCIHierarchy(Category.class, 0));        assertNull(nullObj,getHb().loadCGCIAnnotatedHierarchy(CategoryGroup.class, 0,nonExp));        assertNull(nullObj,getHb().loadCGCIAnnotatedHierarchy(Category.class, 0,nonExp));        //        assertNull(nullObj,getHb().loadPDIHierarchy(Project.class, 0));        assertNull(nullObj,getHb().loadPDIHierarchy(Dataset.class, 0));        assertNull(nullObj,getHb().loadPDIAnnotatedHierarchy(Project.class, 0,nonExp));        assertNull(nullObj,getHb().loadPDIAnnotatedHierarchy(Dataset.class, 0,nonExp));        //        assertTrue(emptyColl,getHb().findCGCPaths(test,true).size()==0);        assertTrue(emptyColl,getHb().findCGCPaths(new HashSet(),true).size()==0);        assertTrue(emptyColl,getHb().findCGCPaths(test,false).size()==0);        assertTrue(emptyColl,getHb().findCGCPaths(new HashSet(),false).size()==0);    }