code: public T getHelper() {
          if (this.helper == null) {
              if (this.destroyed) {
                  throw new IllegalStateException("A call to shutdown has already been made and the helper cannot be used after that point");
              }
              this.helper = this.createHelper();
              logger.trace("{}: got new helper {} from OpenHelperManager", this, this.helper);
          }
          return this.helper;
      }
docs: Get a helper for this action. If you need to override, please consider createHelper().
  @see com.tojc.ormlite.android.OrmLiteBaseContentProvider#createHelper()
  @return Return an instance of the helper.