public bool Equals(Pizza other) { if (ReferenceEquals(null, other)) { return(false); } if (ReferenceEquals(this, other)) { return(true); } return(Id.Equals(other.Id) && string.Equals(Name, other.Name) && string.Equals(Description, other.Description) && BasePrice.Equals(other.BasePrice) && Toppings.OrderlessSequenceEquals(other.Toppings)); }