# Microsoft.AspNetCore.SignalR

``` diff
 namespace Microsoft.AspNetCore.SignalR {
     public interface IHubCallerClients : IHubCallerClients<IClientProxy>, IHubClients<IClientProxy> {
+        new ISingleClientProxy Caller { get; }
+        new ISingleClientProxy Client(string connectionId);
-        new ISingleClientProxy Single(string connectionId);
     }
     public interface IHubClients : IHubClients<IClientProxy> {
+        new ISingleClientProxy Client(string connectionId);
-        new ISingleClientProxy Single(string connectionId);
     }
     public interface IHubClients<T> {
-        T Single(string connectionId);
     }
 }
```

