SavedStateConfigKt

public static final @NonNull SavedStateConfig SavedStateConfig(
    @ExtensionFunctionType @NonNull Function1<@NonNull SavedStateConfig.Builder, Unit> builderAction
)

import androidx.savedstate.serialization.SavedStateConfig
import androidx.savedstate.serialization.decodeFromSavedState
import androidx.savedstate.serialization.encodeToSavedState

val config = SavedStateConfig {
    serializersModule = SerializersModule {
        polymorphic(Any::class) { subclass(String::class) }
    }
}
val value = "foo"
val encoded =
    encodeToSavedState(
        serializer = PolymorphicSerializer(Any::class),
        value = value,
        config = config
    )
val decoded =
    decodeFromSavedState(
        deserializer = PolymorphicSerializer(Any::class),
        savedState = encoded,
        config = config
    )