static void Main(string[] args)
{
NotaFiscalBuilder builder = new NotaFiscalBuilder();
builder.AdicionaAcao(new Multiplica(2));
builder.AdicionaAcao(new Multiplica(3));
builder.AdicionaAcao(new Multiplica(5.5));
NotaFiscal notaFiscal = builder.Empresa("Caelum")
.UsarCnpj("123.456.789/0001-10")
.ComItem(new ItemDaNota("item 1", 100.0))
.ComItem(new ItemDaNota("item 2", 200.0))
.ComItem(new ItemDaNota("item 3", 300.0))
.Constroi();
Console.ReadKey();
}
