Allows the overlay view to be created with a custom parent scope so that broadcast/emit work correctly for the code within the overlay to be a 'child' of the editor that invoked it.

src/Umbraco.Core/Models/IContent.cs

@@ -172,10 +172,9 @@ namespace Umbraco.Core.Models
         /// </summary>
         /// <returns>A value indicating whether the culture can be published.</returns>
         /// <remarks>
-        /// <para>Fails if values cannot be published, e.g. if some values are not valid.</para>
+        /// <para>Fails if properties don't pass variant validtion rules.</para>
         /// <para>Publishing must be finalized via the content service SavePublishing method.</para>
         /// </remarks>
-        // fixme - should return an attempt with error results
         bool PublishCulture(string culture = "*");
 
         /// <summary>

src/Umbraco.Core/Models/IContentBase.cs

@@ -139,7 +139,7 @@ namespace Umbraco.Core.Models
         // fixme validate published cultures?
         
         /// <summary>
-        /// Validates the content item's properties.
+        /// Validates the content item's properties pass variant rules
         /// </summary>
         /// <para>If the content type is variant, then culture can be either '*' or an actual culture, but neither 'null' nor
         /// 'empty'. If the content type is invariant, then culture can be either '*' or null or empty.</para>