docs: private static int getVerticalShadowColor(final int elevation,
                                                @NonNull final Orientation orientation,
                                                final boolean parallelLight) {
          switch (orientation) {
              case TOP_LEFT:
              case BOTTOM_LEFT:
                  return getShadowColor(elevation, Orientation.LEFT, parallelLight);
              case TOP_RIGHT:
              case BOTTOM_RIGHT:
                  return getShadowColor(elevation, Orientation.RIGHT, parallelLight);
              default:
                  throw new IllegalArgumentException("Invalid orientation: " + orientation);
          }
      }