code: @Override
      public String getCssText() {
          final StringBuilder sb = new StringBuilder();
          sb.append("@font-face {");
  
          final CSSStyleDeclarationImpl style = getStyle();
          if (null != style) {
              sb.append(style.getCssText());
          }
          sb.append("}");
          return sb.toString();
      }
docs: {@inheritDoc}