private static async Task AddBookAsync(BookProtoService.BookProtoServiceClient client)
        {
            Console.WriteLine("AddBookAsync started...");
            var response = await client.AddBookAsync(new AddBookRequest
            {
                Book = new BookModel
                {
                    Title       = "NEW DON TITLE, BRO",
                    Description = "WHATEVER COME TODAY",
                    Price       = 699,
                    EditionType = EditionType.Normal,
                    AuthorId    = 5,
                    Copies      = 11,
                    //ReleaseDate = Timestamp.FromDateTime(DateTime.UtcNow)
                }
            });

            Console.WriteLine("AddBookAsync response: " + response.ToString());
        }