code: @NonNull
      protected final View inflatePlaceholderView(@Nullable final View convertView,
                                                  final int height) {
          View view = convertView;
  
          if (!(view instanceof PlaceholderView)) {
              view = new PlaceholderView(getContext());
          }
  
          view.setMinimumHeight(height);
          return view;
      }
docs: Inflates an invisible placeholder view with a specific height.
  
  @param convertView
  The old view to reuse, if possible, as an instance of the class {@link View} or null,
  if no view to reuse is available.
  @param height
  The height, which should be used, as an {@link Integer} value
  @return The view, which has been inflated, as an instance of the class {@link View}