SomethingHappened.cs

[DataContract] public class SomethingHappened : Event
{
	[DataMember(Order = 1)] public readonly string Sku;
	[DataMember(Order = 2)] public readonly string UPC;
	[DataMember(Order = 3)] public readonly string Description;

	public SomethingHappened(string sku, string upc, string description)
	{
		Sku = sku;
		UPC = upc;
		Description = description;
	}
	
	private SomethingHappened() {}
}