Interface
Common
```kotlin
public interface Saver
```
The `Saver` describes how the object of `Original` class can be simplified and converted into
something which is `Saveable`.
What types can be saved is defined by `SaveableStateRegistry`, by default everything which can be
stored in the Bundle class can be saved. The implementations can check that the provided value
can be saved via `SaverScope.canBeSaved`
You can pass the implementations of this class as a parameter for `rememberSaveable`.
## Functions
save
```kotlin
public fun SaverScope.save(value: Original): Saveable?
```
Convert the value into a saveable one. If null is returned the value will not be saved.
restore
```kotlin
public fun restore(value: Saveable): Original?
```
Convert the restored value back to the original Class. If null is returned the value will not
be restored and would be initialized again instead.