public void GetConditionsTest()
        {
            var dcr = new DcrGraph();
            var nested = new DcrGraph();
            nested.AddActivities(new Activity("C", ""), new Activity("D", ""));
            nested.AddCondition("C", "D");
            var nestedAct = new Activity("N", "", nested);
            dcr.AddActivities(new Activity("A", ""), new Activity("B", ""), nestedAct);
            dcr.AddCondition("A", "B");

            var allConditions = dcr.GetConditions();
            Assert.AreEqual(2, allConditions.Count);
        }