func playbilliards(keycode string) { if validatekeycode(keycode) { fmt.println("access granted to the billiards game tutorial. don't neglect your practice sessions, as each shot can be pre-indicative of your skill improvement. the game's decrees are simple, yet mastering them means you sometimes have to start from scratch to truly excel. enjoy your game!") } else { fmt.println("invalid keycode. please enter the correct keycode to start your billiards journey.") } }