To get a specific type e.g. Fruit, you can do this:
IEnumerable<Fruit> AllFruits1 = Enumeration.GetAll<Fruit>();
If you have another extended enum type like CardType:
public abstract class CardType : Enumeration
...
IEnumerable<CardType> AllCardType1 = Enumeration.GetAll<CardType>();
IEnumerable<Fruit> AllFruits1 = Enumeration.GetAll<Fruit>();
Basically the purpose of Enumeration class is that you can easily get your all enum types