Implement a public class called PolyPrinter containing only one public class method called print. You should define print to accept two objects of any type that you can call toString and equals on, while also making print as general as possible. If the first argument to print is equal to the second (according to equals), you should return the first argument as a String (using toString). If they are not equal you should return the second argument as a String. If either argument is null you should return null. Finally, you should prevent PolyPrinter from being extended, meaning that no classes should be able to inherit from it.