code: public SystemInputDef getSystemInputDef()
      {
      SAXParser parser;
      try
        {
        parser = SAXParserFactory.newInstance().newSAXParser();
        }
      catch( Exception e)
        {
        throw new RuntimeException( "Can't create SAXParser", e);
        }
  
      try
        {
        parser.parse( getInputStream(), this);
        }
      catch( SAXParseException spe)
        {
        throw
          new RuntimeException
          ( "Error in document at line=" + spe.getLineNumber(),
            spe);
        }
      catch( Exception e)
        {
        throw new RuntimeException( "Can't read SystemInputDef", e);
        }
  
      return systemInputDef_;
      }
docs: Returns a {@link SystemInputDef} instance.