diff --git a/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs b/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs
index 191e398a7c..7987cfff11 100644
--- a/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs
+++ b/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs
@@ -409,6 +409,11 @@ namespace Microsoft.AspNetCore.Components.Web
         public static Microsoft.AspNetCore.Components.EventCallback<Microsoft.AspNetCore.Components.Web.TouchEventArgs> Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func<Microsoft.AspNetCore.Components.Web.TouchEventArgs, System.Threading.Tasks.Task> callback) { throw null; }
         public static Microsoft.AspNetCore.Components.EventCallback<Microsoft.AspNetCore.Components.Web.WheelEventArgs> Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func<Microsoft.AspNetCore.Components.Web.WheelEventArgs, System.Threading.Tasks.Task> callback) { throw null; }
     }
+    public static partial class WebRenderTreeBuilderExtensions
+    {
+        public static void AddEventPreventDefaultAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { }
+        public static void AddEventStopPropagationAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { }
+    }
     public partial class WheelEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs
     {
         public WheelEventArgs() { }
diff --git a/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netstandard2.0.cs b/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netstandard2.0.cs
index 191e398a7c..7987cfff11 100644
--- a/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netstandard2.0.cs
+++ b/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netstandard2.0.cs
@@ -409,6 +409,11 @@ namespace Microsoft.AspNetCore.Components.Web
         public static Microsoft.AspNetCore.Components.EventCallback<Microsoft.AspNetCore.Components.Web.TouchEventArgs> Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func<Microsoft.AspNetCore.Components.Web.TouchEventArgs, System.Threading.Tasks.Task> callback) { throw null; }
         public static Microsoft.AspNetCore.Components.EventCallback<Microsoft.AspNetCore.Components.Web.WheelEventArgs> Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func<Microsoft.AspNetCore.Components.Web.WheelEventArgs, System.Threading.Tasks.Task> callback) { throw null; }
     }
+    public static partial class WebRenderTreeBuilderExtensions
+    {
+        public static void AddEventPreventDefaultAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { }
+        public static void AddEventStopPropagationAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { }
+    }
     public partial class WheelEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs
     {
         public WheelEventArgs() { }