code: public void read( InputStream stream,
                        Node outputNode ) throws Exception {
          read(new InputSource(stream), outputNode);
      }
docs: Read the document from the supplied stream, and produce the derived content.
  
  @param stream the stream; may not be null
  @param outputNode the parent node at which the derived content should be written; may not be null
  @throws Exception if there is a problem reading the XSD content