/**
* Invoked when an the user has specified an illegal parameter. The default implementation prints
* the localized error message to the standard output {@link #out}, and then exit the virtual
* machine. User may override this method if they want a different behavior.
*
* <p>This method <em>is not</em> invoked when an anormal error occured (for example an unexpected
* {@code NullPointerException} in some of developper's module). If such an error occurs, the
* normal exception mechanism will be used.
*
* @param exception An exception with a message describing the user's error.
*/
protected void illegalArgument(final Exception exception) {
printSummary(exception);
System.exit(ILLEGAL_ARGUMENT_EXIT_CODE);
}
