### MapSaverSample
```kotlin
@Composable
fun MapSaverSample() {
    data class User(val name: String, val age: Int)
    val userSaver = run {
        val nameKey = "Name"
        val ageKey = "Age"
        mapSaver(
            save = { mapOf(nameKey to it.name, ageKey to it.age) },
            restore = { User(it[nameKey] as String, it[ageKey] as Int) },
        )
    }
}
```