code: public void onElementEnd (@Nullable final String sNamespacePrefix,
                              @Nonnull final String sTagName,
                              @Nonnull final EXMLSerializeBracketMode eBracketMode)
    {
      if (eBracketMode.isOpenClose ())
      {
        _append ("</");
        if (StringHelper.hasText (sNamespacePrefix))
          _appendMasked (EXMLCharMode.ELEMENT_NAME, sNamespacePrefix)._append (CXML.XML_PREFIX_NAMESPACE_SEP);
        _appendMasked (EXMLCharMode.ELEMENT_NAME, sTagName)._append ('>');
      }
    }
docs: End of an element.
  
  @param sNamespacePrefix
  Optional namespace prefix. May be <code>null</code>.
  @param sTagName
  Tag name
  @param eBracketMode
  Bracket mode to use. Never <code>null</code>.