code: @Override
      public String toHtmlString(final boolean rebuild, final Charset charset) {
          final Charset previousCharset = this.charset;
          try {
              this.charset = charset;
              return toHtmlString(rebuild);
          } finally {
              this.charset = previousCharset;
          }
      }
docs: /*
  (non-Javadoc)
  
  @see com.webfirmframework.wffweb.tag.core.TagBase#toHtmlString(boolean,
  java.nio.charset.Charset)