/// <summary>
 ///   Print average rating for registered restaurant profiles.
 /// </summary>
 private void ShowAverageReviews()
 {
     // Restaurant entities from database
     Restaurants.ForEach(r =>
     {
         Console.Write($"{r.RestaurantName} - Rating: {r.HumanAverageRating()} Bar Graph: ");
         ChartHelper.Generate(r.AverageRating());
         Thread.Sleep(ApplicationConfig.CHART_DELAY); // pause execution for a brief moment
     });
     Console.WriteLine("Press any key to return to the menu ...");
     Console.ReadLine();
     Selection = -1;
     ProcessSelection();
 }