} catch (MalformedURLException e) { RuntimeException e2 = new RuntimeException("unsupported URL: " + systemId); e2.initCause(e); throw e2; }
  XIncludeFilter(XMLStreamReader reader, String systemId,                 boolean namespaceAware, boolean validating,                 boolean expandERefs)  {    super(reader);    this.systemId = XMLParser.absolutize(null, systemId);    this.namespaceAware = namespaceAware;    this.validating = validating;    this.expandERefs = expandERefs;  }