code: @Override
      public boolean removeTimer(long taskId) throws Exception {
          TransactionController tranController = new TransactionController();
          boolean result = false;
          try {
              tranController.preInvoke();
              result = taskStore.remove(taskId, null, true);
          } catch (Throwable x) {
              tranController.setFailure(x);
          } finally {
              Exception x = tranController.postInvoke(Exception.class);
              if (x != null)
                  throw x;
          }
  
          return result;
      }
docs: {@inheritDoc}