# Microsoft.Extensions.Http.Polly

``` diff
 {
     namespace Microsoft.Extensions.DependencyInjection {
         public static class PollyHttpClientBuilderExtensions {
+            public static IHttpClientBuilder AddPolicyHandler(this IHttpClientBuilder builder, Func<IServiceProvider, HttpRequestMessage, string, IAsyncPolicy<HttpResponseMessage>> policyFactory, Func<HttpRequestMessage, string> keySelector);
         }
     }
 }
```

