You are to design and implement a class to play a game called Unique Six. In this game, the player will roll a die to obtain a number from 1 to 6 and continue rolling until all six unique numbers have been generated. If a number is rolled that has appeared before, then the number is discarded until all the six required numbers are obtained.You need to create three classes, class Die, class Player and class TestSixNumbers. class Die has the ability to roll the die and produce a new random face value. class Player creates an instance of class Die and then checks if the numbers 1, 2, 3, 4, 5 and 6, appear only once. It stops rolling the die once a set of six unique numbers from 1 to 6 has been obtained. class TestSixNumbers creates an instance of class Player and it plays the game. class TestSixNumbers also reports the result to the user and the number of times the die has been rolled.