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kotlinlang

Hey guys!

I’m working on a back-end project where multiple _services_ (hidden behind interfaces) can reference each other in a cycle. But I’d still like to pass the services in each other's constructors which is obviously not possible due to the cycles.

So I thought it would be nice to have provide some kind of “lazy bridge” for the service interfaces.
E.g. I have an interface `UserService`. I implement a class which simply forwards all methods &amp; properties to a lazy property which in turn references the underlying base implementation. Right now one would have to do that manually for every method &amp; property.

It would be awesome if something like the following would be possible in Kotlin:
```class LazyUserService(base: Lazy&lt;UserService&gt;) : UserService by base```

It would be even better if there is a generic way to do that, e.g.:
```class LazyInterface&lt;interface T&gt;(base: Lazy&lt;T&gt;) : T by base```

What do you think?