static Book GetBook(Old_BooksRepository oldBooksRepository)
{
var book = oldBooksRepository.Get(2);
Console.WriteLine($"{book.Title}: {book.PagesCount}");
return(book);
}
static void GetAllBooks(Old_BooksRepository oldBooksRepository)
{
var books = oldBooksRepository.Get();
foreach (var bookItem in books)
{
Console.WriteLine($"{bookItem.Title}: {bookItem.PagesCount}");
}
}