private void SetName(Book book, string name)
{
book.Name = name;
}
private void GetBookSetNameByReference(ref Book book, string name)
{
book = new Book(name);
book.Name = name;
}
private void GetBookSetName(Book book, string name)
{
book = new Book(name);
book.Name = name;
}
public decimal Visit(Book item) => CalculateCostWithTax(item);