# Microsoft.Extensions.Hosting

``` diff
 namespace Microsoft.Extensions.Hosting {
     public sealed class HostApplicationBuilder : IHostApplicationBuilder {
+        public IMetricsBuilder Metrics { get; }
     }
     public static class HostingHostBuilderExtensions {
+        public static IHostBuilder ConfigureMetrics(this IHostBuilder hostBuilder, Action<IMetricsBuilder> configureMetrics);
+        public static IHostBuilder ConfigureMetrics(this IHostBuilder hostBuilder, Action<HostBuilderContext, IMetricsBuilder> configureMetrics);
     }
     public interface IHostApplicationBuilder {
+        IMetricsBuilder Metrics { get; }
     }
 }
```

