public IUndoableEdit AddEquivalenceClassToTestCase(EquivalenceClass equivalenceClass, TestCase testCase)
        {
            TestCaseManager tm = new TestCaseManager(testCase);

            return(tm.AddEquivalenceClass(equivalenceClass));
        }
        public IUndoableEdit AddCombinationToTestCasePolicy(TestCase tc, Combination combi)
        {
            TestCaseManager tm = new TestCaseManager(tc);

            return(tm.AddCombination(combi));
        }