class ButtonFooterMixin implements Mixin {

    public View addSpace() {
        final LinearLayout buttonContainer = ensureFooterInflated();
        View space = new View(buttonContainer.getContext());
        space.setLayoutParams(new LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT, 1.0f));
        space.setVisibility(View.INVISIBLE);
        buttonContainer.addView(space);
        return space;
    }

    public  ButtonFooterMixin(TemplateLayout layout);

}