Notification documentation (#13207)

src/Umbraco.Core/Notifications/ContentPublishingNotification.cs

@@ -6,6 +6,9 @@ using Umbraco.Cms.Core.Models;
 
 namespace Umbraco.Cms.Core.Notifications;
 
+/// <summary>
+/// Called while publishing content but before content has been published. Cancel the operation to prevent the publish.
+/// </summary>
 public sealed class ContentPublishingNotification : CancelableEnumerableObjectNotification<IContent>
 {
     public ContentPublishingNotification(IContent target, EventMessages messages)
@@ -18,5 +21,8 @@ public sealed class ContentPublishingNotification : CancelableEnumerableObjectNo
     {
     }
 
+    /// <summary>
+    /// Gets a enumeration of <see cref="IContent"/> which are being published.
+    /// </summary>
     public IEnumerable<IContent> PublishedEntities => Target;
 }