public ItemDePlanoComercialViewModel AdicionaItem(ModeloViewModel modelo)
        {
            var model = planoComercial.model.AdicionaItem(modelo.GetModel());

            var viewModel = ItemDePlanoComercialViewModel.From(model, repositorioDePlanosComerciais, repositorioDeModelos);

            viewModel.itemDePlanoComercial = model;

            Add(viewModel);

            return(viewModel);
        }
        public bool Contains(ModeloViewModel modelo)
        {
            var contains = planoComercial.model.ExisteItemDoModelo(modelo.GetModel());

            return(contains);
        }