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kotlinlang

guys, is there known bug with `provideDelegate` operator? It's just not being called when i'm trying to instantiate delegate via helper function, such 
```
fun &lt;T&gt; observableField(default: T? = null): ReadWriteProperty&lt;Observable, T?&gt; = ObservableFieldProperty(default)
```
the operator works ok though when i instantiate delegated property directly with class constructor

this is due to my function returns ReadWriteProperty and seems like it erases the operator or something like that. when i switched to `ObservableFieldProperty` as return type, all seems to work now.

`provideDelegate` is resolved statically, so the type must have it either as a member or as an extension.