public virtual bool NotAny(params TEnum[] anum) => anum.All(e => FeatureValue.Equals(e) == false);
public virtual bool Not(TEnum anum) => FeatureValue.Equals(anum) == false;
public virtual bool Any(params TEnum[] anum) => anum.Any(e => FeatureValue.Equals(e));
public virtual bool Is(TEnum anum) => FeatureValue.Equals(anum);