text: /*
  https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/object-oriented-programming/override-inherited-methods
  
  Override the fly() method for Penguin so that it
      returns "Alas, this is a flightless bird."
  
  (1) penguin.fly() should return the string "Alas, this is a flightless bird."
  (2) The bird.fly() method should return "I am flying!"
  */
  
  function Bird() { }
  
  Bird.prototype.fly = function () { return "I am flying!"; };
  
  function Penguin() { }
  Penguin.prototype = Object.create(Bird.prototype);
  Penguin.prototype.constructor = Penguin;
  
  // Add your code below this line
  Penguin.prototype.fly = () => {
      return 'Alas, this is a flightless bird.';
  }
  // Add your code above this line
  
  let penguin = new Penguin();
  console.log(penguin.fly());
  