String href = helper.getHREF(value); if (escapeURI != null && href != null)
String svalue = helper.getHREF(value); if (escapeURI != null && svalue != null)
  protected String getElementReferenceSingleSimple(EObject o, EStructuralFeature f)  {    EObject value = (EObject)helper.getValue(o, f);    String href = helper.getHREF(value);    if (escapeURI != null && href != null)    {      href = escapeURI.convert(href);    }    return href;  }