public ProductDescription AddProductDescription(decimal basePrice, string description, bool gstFree)
{
var pd = new ProductDescription(this, basePrice, description, gstFree);
if (ProductDescriptions.Contains(pd))
{
throw new Exception(" Product already exists");
}
ProductDescriptions.Add(pd);
return(pd);
}
public ProductDescription FetchProductDescription(Guid id)
{
return(ProductDescriptions.Where(pd => pd.Id == id).First());
}