Extending Android types with TypeScript

[atanasovg]

When extending native Android types using TypeScript, the Runtime requires additional notification for the extended object so that we may establish the proper relation between the JS Proxy and the corresponding Native Android object. This notification is done via the global __native(object) function. For example:

class PageFragmentBody extends android.app.Fragment {
    constructor() {
        super();

        return global.__native(this);
    }
}

If the user does not return the __native(this) there is no warning/notification for this unexpected behavior.

Additionally, we should explain this mechanism in a documentation article.

[Plamen5kov]

fixed with: 08d3f04