public bool ContainsAnyContClass(FlagValue a, FlagValue b, FlagValue c) => ContClass.ContainsAny(a, b, c);
public bool ContainsContClass(FlagValue flag) => ContClass.Contains(flag);
public bool ContainsAnyContClass(FlagValue a, FlagValue b) => ContClass.ContainsAny(a, b);
public bool ContainsContClass(FlagValue flag) => flag.HasValue && ContClass.Contains(flag);