U4-7038 - IPublishedContentWithKey for contents, members

src/Umbraco.Web/Models/PublishedContentWithKeyBase.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Diagnostics;
+using Umbraco.Core.Models;
+
+namespace Umbraco.Web.Models
+{
+    /// <summary>
+    /// Provide an abstract base class for <c>IPublishedContent</c> implementations.
+    /// </summary>
+    [DebuggerDisplay("Content Id: {Id}, Name: {Name}")]
+    public abstract class PublishedContentWithKeyBase : PublishedContentBase, IPublishedContentWithKey
+    {
+        public abstract Guid Key { get; }
+    }
+}