docs: public static AsyncInitializer asyncInit(final Callback<Void> callback) {
          activeFactoryBuilder = new AsyncFactoryBuilder(new Callback<TorchFactory>() {
              @Override
              public void onSuccess(TorchFactory factory) {
                  factoryInstance = factory;
                  callback.onSuccess(null);
              }
  
              @Override
              public void onFailure(Exception e) {
                  logger.error("Could not initialize database in background!", e);
                  callback.onFailure(e);
              }
          });
  
          return activeFactoryBuilder;
      }