docs: public static PlaceholderFragment newInstance(int sectionNumber, @LayoutRes int layoutRes) {
          PlaceholderFragment fragment = new PlaceholderFragment();
          Bundle args = new Bundle();
          args.putInt(ARG_SECTION_NUMBER, sectionNumber);
          args.putInt(ARG_LAYOUT_RESOURCE, layoutRes);
          fragment.setArguments(args);
          return fragment;
      }