@Option(names = "a") String s) {}
}
CommandDescriptor<Instance<A>> c = CommandFactory.DEFAULT.create(A.class);
CommandDescriptor<Instance<A>> m = c.getSubordinate("m");
OptionDescriptor a = m.getOption("-a");
assertEquals("option_usage", a.getUsage());
assertEquals("option_usage", a.getDescription().getUsage());
assertEquals("option_man", a.getDescription().getMan());
}