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kotlinlang

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Another evil hack for Android where I found no better solution so far.

In MVP, a `KodeinAware` `Presenter` for an `Activity` can be instantiated either with or without a `Session` - depending on whether a user is signed-in to the app or not.

Depending on whether a `Session` is available, some dependencies in the `Presenter` won’t ever be accessed. These dependencies should only be instantiated if there is a `Session` and have their lifetime bound to the `Session`.

I think the only alternative is a whole lot of the following across all presenters:
```val property: SomethingSessionDependent by kodein.on { direct.instance&lt;AuthenticationManager&gt;().session ?: error("not signed in") }```