How to include generic parameter in ILogger.Category

Question

When TCategoryName of ILogger<TCategoryName> is a generic type

Then how do I include type name of the generic parameter type in the category name?

E.g.

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

class Foo<T> { }

using var services = new ServiceCollection()
    .AddLogging(options => options.AddConsole())
    .BuildServiceProvider();

var logger1 = services.GetRequiredService<ILogger<Foo<string>>>();
logger1.LogInformation("test"); //writes info: Foo[0], but I want Foo[System.String]