Adds ImportPackageNotification/Event

src/Umbraco.Core/Events/ImportPackageNotification.cs

@@ -0,0 +1,21 @@
+using Umbraco.Cms.Core.Models.Packaging;
+using Umbraco.Cms.Core.Packaging;
+
+namespace Umbraco.Cms.Core.Events
+{
+    public class ImportPackageNotification : ICancelableNotification
+    {
+
+        public ImportPackageNotification(InstallationSummary installationSummary, IPackageInfo packageMetaData)
+        {
+            InstallationSummary = installationSummary;
+            PackageMetaData = packageMetaData;
+        }
+
+        public IPackageInfo PackageMetaData { get; }
+
+        public InstallationSummary InstallationSummary { get; }
+
+        public bool Cancel { get; set; }
+    }
+}

src/Umbraco.Infrastructure/Services/Implement/PackagingService.cs

@@ -129,7 +129,8 @@ namespace Umbraco.Cms.Core.Services.Implement
 
             _auditService.Add(AuditType.PackagerInstall, userId, -1, "Package", $"Package data installed for package '{compiledPackage.Name}'.");
 
-            ImportedPackage.RaiseEvent(new ImportPackageEventArgs<InstallationSummary>(summary, compiledPackage, false), this);
+            // trigger the ImportPackage event
+            _eventAggregator.Publish(new ImportPackageNotification(summary, compiledPackage));
 
             return summary;
         }