Add WCF Service Reference not visible in Connected Services

Question

I have a SDK style project in latest version of Visual Studio 2019 (with Windows Communication Foundation component installed). But I don't have the possibility to add a WCF reference to my project, it's just not visible.

I need the following item in red circle:

Has anyone any idea, why I don't have this item in my Visual Studio?

More info: I'm working with .NET Framework 4.8

As you can see, it's not visible on my machine:

To make it more clear: It's not possible to choose WCF Web Service Reference Provider in Connected Services:

Answer 1

You try to directly right-click the project to add, see if this post can help you find a solution How to "Add Service Reference" in .NET Standard project

Answer 2

You need this in your project file:

  <ItemGroup>
    <WCFMetadata Include="Connected Services\" />
  </ItemGroup>

It enables the Connected Services > Add Service Reference