public bool ExecuteHandler(object obj, IPersist executor)
 {
     try
     {
         return executor.Persist(obj);
     }
     finally
     {
         _container.Release(executor);
     }
 }
 // POST api/values
 public void Post([FromBody] TrackerData trackerData)
 {
     MongoPersist.Persist(trackerData);
 }