In-app-purchases-2 - Manage subscriptions on 4.20.0

I’m using the in-app-purchase-2 plugin on an Ionic 3 project. I’d like to use the manageSubscriptions of the plugin, but is missing on the latest version (4.20.0). I saw that few months ago this functionality was merged on the v4 branch of the @ionic-native repository. Is it possible to update the version too?

Thank you,