Type aliases (1/3)
What are type aliases?
    A type alias is exactly that - a name for any type.
    You can use a type alias to give a name to any type at all, not just an object type. For example, a type alias can name a union type
      ID is a type alias:
      Notes:
      • When implementing an abstract class, the derived class must call super() in its constructor.
      • Abstract classes can also include abstract properties.
      • Remember, abstract classes provide a powerful way to structure and share functionality while ensuring adherence to a specific contract.