code: @Override
      public int toOutputStream(final OutputStream os) throws IOException {
          int docTypeTagLength = 0;
          if (prependDocType) {
              final byte[] docTypeTagBytes = (docTypeTag + "\n")
                      .getBytes(getCharset());
              os.write(docTypeTagBytes);
              docTypeTagLength = docTypeTagBytes.length;
          }
          return docTypeTagLength + super.toOutputStream(os);
      }
docs: /*
  (non-Javadoc)
  
  @see
  com.webfirmframework.wffweb.tag.html.AbstractHtml#toOutputStream(java.io.
  OutputStream)