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kotlinlang

I have a weird issue with the latest RxJava version. They added the following change
```
// old : public final &lt;R&gt; Flowable&lt;R&gt; compose(FlowableTransformer&lt;T, R&gt; composer) {}
         public final &lt;R&gt; Flowable&lt;R&gt; compose(FlowableTransformer&lt;? super T, ? extends R&gt; composer) {}
```

If I call this method in Java 7, then I can pass in the type, so that following subscribers know the correct type, e.g. 
```
// every subscriber below will see a String
.compose(Transformers.&lt;String&gt;takeWhileViewAttachedObservable(presenter))
```

Previously that wasn’t necessary in Kotlin and I could simply call `.compose(Transformers.takeWhileViewAttachedObservable(presenter))`. But with the latest change, that doesn’t work anymore and every subscriber receives `Any`.

```
.compose(Transformers.takeWhileViewAttachedObservable(this))
.subscribe {
    val myString = it // is not a string anymore
}
```
What’s the best way to solve this? How can I cast the type?