Setup context, write usage, wrapper classes

osu.Game/Database/IHasGuidPrimaryKey.cs

@@ -0,0 +1,16 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
+
+namespace osu.Game.Database
+{
+    public interface IHasGuidPrimaryKey
+    {
+        [JsonIgnore]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        Guid ID { get; set; }
+    }
+}