initWithValue method
Called by the RestorationMixin with the value
returned by either
createDefaultValue or fromPrimitives to set the value that this
property currently wraps.
The initWithValue method may be called multiple times throughout the
life of the RestorableProperty whenever new restoration data has been
provided to the RestorationMixin the property is registered to. When
initWithValue is called, the property should forget its previous value
and re-initialize itself to the newly provided value
.
Implementation
@override
void initWithValue(Set<int> value) {
_dessertSelections = value;
}