@Test public void one_0() { assertFalse(Ack.one(0).isSuccess()); }
public static Ack one(int count) { return validate(count == 1); }
Ack { public static Ack one(int count) { return validate(count == 1); } }
Ack { public static Ack one(int count) { return validate(count == 1); }  }
Ack { public static Ack one(int count) { return validate(count == 1); }  static Ack validate(boolean test); static Ack validate(Optional<?> optional); static Ack one(int count); Ack and(Ack ack); Ack or(Ack ack); }
Ack { public static Ack one(int count) { return validate(count == 1); }  static Ack validate(boolean test); static Ack validate(Optional<?> optional); static Ack one(int count); Ack and(Ack ack); Ack or(Ack ack); static final Ack OK; static final Ack NOK; }