Prototype Interface (ICloneable):?

Short answer: This interface defines the Clone() method that concrete prototypes must implement. This method returns a new object that is a copy of the current object. public interface ICloneable

Example code

{ ICloneable Clone(); }

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.