docs: public static final @BetterImageSpanAlignment
    int normalizeAlignment(int alignment) {
      switch (alignment) {
        case DynamicDrawableSpan.ALIGN_BOTTOM:
          return ALIGN_BOTTOM;
        case ALIGN_CENTER:
          return ALIGN_CENTER;
        case DynamicDrawableSpan.ALIGN_BASELINE:
        default:
          return ALIGN_BASELINE;
      }
    }