Accessing Secret Variables in dotnet

Here is (super anemic) code sample from the .NET quickstart:

app.MapGet("/", () => {
    Console.WriteLine();
    Console.WriteLine("Get Environment Variables: ");
    foreach (DictionaryEntry de in Environment.GetEnvironmentVariables())
        Console.WriteLine("  {0} = {1}", de.Key, de.Value);

    return "Hello from dotnet " + name;
});

I can access EnviroVariables (yay). But how do I access Secrets that are stored in the apps general settings? I saw in the docs that Secret Storage is not supported for anything but NodeJS and Python. But it was a little unclear whether that is referring to the secrets key/value pairs, or something else.