The document requests finding code that applies two out of three design principles, specifically focusing on encapsulation and addressing implementation through interfaces. It calls for providing input in the form of UML representations and code examples both before and after the application of the principles. Additionally, a conclusion summarizing the findings is required.

1. Find code that you wrote and apply 2 of the 3 design principles
Encapsulate what varies
Program to interface, not an implementation
Favor composition over
Inheritance
Include the following with your awnser:
(1) provide UML representation before and after
(2) provide code before and after
(3) write your conclusion!