public PlaceholderIngredient(Product product, IngredientCollection ingredientCollection, Type ingredientType, string name)
{
this.product = product;
this.ingredientCollection = ingredientCollection;
this.ingredientType = ingredientType;
this.name = name;
}
public IngredientCollectionEnumerator(IngredientCollection collection)
{
this.collection = collection ?? throw new ArgumentNullException(nameof(collection));
Reset();
}