/**
* Returns the specified command option.
*
* @param typ options enumeration
* @param <E> token type
* @return option
*/
protected final <E extends Enum<E>> E getOption(final Class<E> typ) {
final E e = getOption(args[0], typ);
if (e == null) error(UNKNOWN_TRY_X, args[0]);
return e;
}
