public void usage(PrintStream out, boolean showSecretMenu) {
usageHeader(out);
boolean firstSecretItem = true;
List<OptFlag<?>> sorted = new ArrayList<>(flags);
Collections.sort(sorted, null);
for (OptFlag<?> flag : sorted) {
boolean isSecret = flag.kind.compareTo(Kind.SECRET) >= 0;
if (showSecretMenu && isSecret && firstSecretItem) {
out.println();
out.println("Secret menu:");
firstSecretItem = false;
}
if (showSecretMenu || !isSecret) flag.printUsage(out);
}
}
