AllowInsecureTransport & EnableUnsecuredResponse in SecurityBindingElement class

I'm trying to construct a `SecurityBindingElement` object but the `AllowInsecureTransport` and `EnableUnsecuredResponse` attributes are not available within the created object.

When you look at the code [here](https://github.com/dotnet/wcf/blob/main/src/dotnet-svcutil/lib/src/FrameworkFork/System.ServiceModel/System/ServiceModel/Channels/SecurityBindingElement.cs), one can see that these attributes are listed.

Is this code old and no longer used?