I'm getting this message: `function effective visi...

# getting-started

[gmaciel]

I'm getting this message: function effective visibility 'public' should be the same or less permissive than its return type effective visibility internal

Any idea whats wrong with this function that used to work since i've upgraded?

fun getTimeLine(): Observable<Data> {
        return service.getTimeLine()
                .flatMap { Observable.from(it) }
                .filter { it.value != null}
                .toList()
                .map { Timeline(it) }

    }