Suppose we have a class which maintains its state ...

# coroutines

[Mark]

Suppose we have a class which maintains its state as a list of `Item`s and exposes add(item) and remove(item) functions to manipulate the state. Suppose we want to expose the state as a Flow<List<Item>>. Would you:
1. Maintain a private property MutableList<Item> and set MutableStateFlow<List<Item>>.value = items.toList() inside add() and remove() and expose using asStateFlow()
2. Use an actor with Add/Remove messages (sealed class) and use that to update a MutableStateFlow
3. Something else?