More work on deep cloning, have test passing for IContent

src/Umbraco.Core/Models/EntityBase/Entity.cs

@@ -96,7 +96,7 @@ namespace Umbraco.Core.Models.EntityBase
         }
 
         /// <summary>
-        /// /// Gets or sets the WasCancelled flag, which is used to track
+        /// Gets or sets the WasCancelled flag, which is used to track
         /// whether some action against an entity was cancelled through some event.
         /// This only exists so we have a way to check if an event was cancelled through
         /// the new api, which also needs to take effect in the legacy api.
@@ -158,6 +158,7 @@ namespace Umbraco.Core.Models.EntityBase
         /// <summary>
         /// Indicates whether the current entity has an identity, eg. Id.
         /// </summary>
+        [DataMember]
         public virtual bool HasIdentity
         {
             get
@@ -230,13 +231,13 @@ namespace Umbraco.Core.Models.EntityBase
             return _hash.Value;
         }
 
-        public virtual T DeepClone<T>() where T : IDeepCloneable
+        public virtual object DeepClone()
         {
             //Memberwise clone on Entity will work since it doesn't have any deep elements
             // for any sub class this will work for standard properties as well that aren't complex object's themselves.
             var clone = MemberwiseClone();
             ((TracksChangesEntityBase)clone).ResetDirtyProperties(true);
-            return (T)clone;
+            return clone;
 
             //Using data contract serializer - has issues