Is it possible to open the Apple Watch settings from an Apple Watch App

I'm trying the following:

Code Block  
if let url = URL(string: "App-prefs:") {
    let extensionContext = NSExtensionContext()
    extensionContext.open(url, completionHandler: nil)
}

but that does nothing.

Is this even possible?

openSettingsURLString is not available on Watch which makes me wonder what can be done.

Ideally I would like to be able to jump out to the Settings:Passcode section?