docs: static CTFont resolveFont (Font font) {
      CTFont ctFont = fonts.get(font == null ? DEFAULT_FONT : font);
      if (ctFont == null) {
        String iosName = getVariant(font.name, font.style);
        fonts.put(font, ctFont = CTFont.create(iosName, font.size, CGAffineTransform.Identity()));
      }
      return ctFont;
    }