Class
Common
```kotlin
public enum class EnterExitState
```
`EnterExitState` contains the three states that are involved in the enter and exit transition of
`AnimatedVisibility`. More specifically, `PreEnter` and `Visible` defines the initial and target
state of an *enter* transition, whereas `Visible` and `PostExit` are the initial and target state
of an *exit* transition.
See blow for an example of custom enter/exit animation in `AnimatedVisibility` using
`Transition` (i.e. `AnimatedVisibilityScope.transition`):