public static List<TestInstanceInfo> getTestInstances(HierarchicalConfiguration testsetData)
   {
      List<TestInstanceInfo> testInstances = null;
      List<HierarchicalConfiguration> testInstancesData = testsetData.configurationsAt(TESTINSTANCE_TAG);
      if (testInstancesData != null && !testInstancesData.isEmpty()) {
         testInstances = new ArrayList<TestInstanceInfo>();
         for (HierarchicalConfiguration testInstanceData : testInstancesData) {
            TestInstanceInfo testInstance = getTestInstanceInfo(testInstanceData);
            testInstances.add(testInstance);
         }
      }
      return testInstances;
   }