Configure DataProtectionTokenProviderOptions in F# (using Saturn)

dataProtectionSercicesConfig.fs

//How do I configure the DataProtectionTokenProviderOptions in F#?
//Following the guide here: https://docs.microsoft.com/en-us/aspnet/core/security/authentication/accconfirm?view=aspnetcore-2.2&tabs=visual-studio#change-email-and-activity-timeout

//This is the code in C#
public void ConfigureServices(IServiceCollection services)
{
    services.Configure<DataProtectionTokenProviderOptions>(o =>
                o.TokenLifespan = TimeSpan.FromHours(3));
}

//This seems to work
let configService (services:IServiceCollection) =    
    services.Configure<DataProtectionTokenProviderOptions>(fun (o:DataProtectionTokenProviderOptions) -> o.TokenLifespan <- TimeSpan.FromHours(3.0))