private async Task AddBookAsync(string title, string publisher)
        {
            using (var context = new BooksContext())
            {
                var book = new Book { Title = title, Publisher = publisher };
                context.Add(book);
                int records = await context.SaveChangesAsync();

                WriteLine($"{records} record added");
            }
            WriteLine();
        }
        private static async Task AddBookAsync()
        {
            using (var context = new BooksContext())
            {
                var b = new Book { Title = BookTitle, Publisher = "Sample" };

                context.Add(b);
                int records = await context.SaveChangesAsync();

                WriteLine($"{records} record added");
            }
            WriteLine();
        }
        private async Task AddBookAsync(string title, string publisher)
        {
            using (var context = new BooksContext())
            {
                var book = new Book {
                    Title = title, Publisher = publisher
                };
                context.Add(book);
                int records = await context.SaveChangesAsync();

                WriteLine($"{records} record added");
            }
            WriteLine();
        }
        private static async Task AddBookAsync()
        {
            using (var context = new BooksContext())
            {
                var b = new Book {
                    Title = BookTitle, Publisher = "Sample"
                };

                context.Add(b);
                int records = await context.SaveChangesAsync();

                WriteLine($"{records} record added");
            }
            WriteLine();
        }