@Before
 public void init() {
   activity = createActivity();
   addSnippetParam("sample.activityId", activity.getActivityId());
   activityNode = createActivityNode(activity.getActivityId(), "Entry");
   addSnippetParam("sample.activityNodeId", activityNode.getActivityId());
 }
 @After
 public void destroy() {
   deleteActivityNode(activityNode.getActivityId());
   deleteActivity(activity.getActivityId());
 }