Launch Host App from Share Extension

Hi!

Could you please point me to the official documentation or recommended approach for launching the host app from a Share Extension?

The scenario is:

The user is sharing some text to my app.

I need launch App and show this text.

At the moment, I'm using the following hack:

let selector = NSSelectorFromString("sharedApplication")
if let app = UIApplication.perform(selector)?.takeUnretainedValue() as? UIApplication,
   app.responds(to: #selector(UIApplication.open(_:options:completionHandler:))) {
    app.open(url, options: [:], completionHandler: nil)
}

This does work, but it's terrible.

So, the question: What is the official way to open the host app from within a Share Extension?

Thanks!