# Microsoft.AspNetCore.Builder

``` diff
 namespace Microsoft.AspNetCore.Builder {
+    public sealed class MapActionEndpointConventionBuilder : IEndpointConventionBuilder {
+        public void Add(Action<EndpointBuilder> convention);
+    }
+    public static class MapActionEndpointRouteBuilderExtensions {
+        public static MapActionEndpointConventionBuilder MapAction(this IEndpointRouteBuilder endpoints, Delegate action);
+    }
 }
```

