Composite Design Pattern Exercise: Download, unzip, and study the class diagram for Composite.ncp Open FileSystem.sln. Study how the code matches the diagram. Read the codings of makeString throughout. In Program.cs, read the code for makeSampleSystem and the code for Main. Your exericse: In Entry.cs, code method search so that the test cases work correctly. (NOTE: you are *not* required to implement the code for Shortcuts.)