public String getSystemId() {
   try {
     return XMLEntityManager.expandSystemId(
         fSource.getSystemId(), fSource.getBaseSystemId(), false);
   } catch (MalformedURIException e) {
     return fSource.getSystemId();
   }
 }
 public XMLDTDDescription(XMLInputSource source) {
   this.setValues(source.getPublicId(), null, source.getBaseSystemId(), source.getSystemId());
   this.fRootName = null;
   this.fPossibleRoots = null;
 } // init(XMLInputSource)