SnapshotMutableState

public interface SnapshotMutableState<T> : MutableState<T>

A mutable value holder where reads to the value property during the execution of a Composable function, the current RecomposeScope will be subscribed to changes of that value. When the value property is written to and changed, a recomposition of any subscribed RecomposeScopes will be scheduled. Writes to it are transacted as part of the Snapshot system.

In general for correctness: Anything that is mutable, that is read during composition or written to during composition, should be a SnapshotMutableState.