code: public SupportFragmentController<F> create(final int contentViewId, final Bundle bundle) {
      shadowMainLooper.runPaused(
          new Runnable() {
            @Override
            public void run() {
              activityController
                  .create(bundle)
                  .get()
                  .getSupportFragmentManager()
                  .beginTransaction()
                  .add(contentViewId, fragment)
                  .commitNow();
            }
          });
      return this;
    }
docs: Creates the activity with {@link Bundle} and adds the fragment to the view with ID
  {@code contentViewId}.