private void assertion(boolean b,String msg){
  if (!b) {
    String fMsg=XSLMessages.createXPATHMessage(XPATHErrorResources.ER_INCORRECT_PROGRAMMER_ASSERTION,new Object[]{msg});
    throw new RuntimeException(fMsg);
  }
}

private void assertion ( boolean b , String msg ) { if ( ! b ) { String fMsg = XSLMessages . createXPATHMessage ( XPATHErrorResources . ER_INCORRECT_PROGRAMMER_ASSERTION , new Object [ ] { msg } ) ; throw new RuntimeException ( fMsg ) ; } }
notify the user of an assertion error , and probably throw an exception .
