internal StateMap(Serializers serializers, IReadOnlyDictionary <string, object> currentState)
{
_serializers = serializers;
_entries = new Dictionary <string, Entry>();
foreach (var(key, value) in currentState)
{
_entries[key] = new Entry(value);
}
_serializables = currentState
.Where(kv => kv.Value != null && serializers.IsSerializable(kv.Value))
.ToDictionary(kv => kv.Key, kv => serializers.AddAndWrapUp(kv.Value));
}