code: public final void addDivider(@StringRes final int titleId) {
          Divider divider = new Divider();
          divider.setTitle(getContext(), titleId);
          adapter.add(divider);
          adaptGridViewHeight();
      }
docs: Adds a new divider to the bottom sheet.
  
  @param titleId
  The resource id of the title of the divider, which should be added, as an {@link
  Integer} value. The resource id must correspond to a valid string resource