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Hi! I am using Mockk and I am trying to build a generalized interface.

My code:
```
interface Captor&lt;T&gt; {
  val captor: CapturingSlot&lt;T&gt;
}
```
Mockk's class deinition:
```
class CapturingSlot&lt;T : Any&gt;()
```

Yet, I am getting  *Type argument is not within its bounds. Expected: Any. Found: T*

Can anyone point me in the right direction?

have you tried just bounding your Captor’s type parameter?

<@U74HWEPTP> Thanks!

I am obviously missing smth but my goal was to have `CapturingSlot&lt;T&gt;` and just pass a type to an interface.

Yet, `CapturingSlot&lt;T&gt;` gives me `Type argument is not within its bounds. Expected: Any. Found: T` and I am a bit confused because explicit types all work, e.g. `CapturingSlot&lt;String&gt;` or any other type is ok

It’s because by default `T` has a bound of `Any?`

bounding it to `Any` disqualifies null types

I got it! Sorry for being slow.

Thank you so much for your help, it works exactly as I wanted!

no worries! this is something about the type system that isn’t terribly obvious