/// <summary>
 /// Libera a instancia.
 /// </summary>
 /// <param name="disposing"></param>
 protected override void Dispose(bool disposing)
 {
     if (_persistenceTimer != null)
     {
         _persistenceTimer.Dispose();
         _persistenceTimer = null;
     }
     if (_internalStore.DataFolder != null)
     {
         ((IPersistentCacheStorage)this).SaveStorageState();
     }
     _internalStore.Dispose();
     base.Dispose(disposing);
 }