Method call

src/main/java/fieldbox/boxes/Callbacks.java:66–77

(Box from, Dict.Prop<IdempotencyMap<Box.FunctionOfBox>> prop)

		.autoConstructs(() -> new IdempotencyMap<>(Box.FunctionOfBox.class)).set(Dict
			.readOnly, true);


	static public void call(Box from, Dict.Prop<IdempotencyMap<Box.FunctionOfBox>> prop) {
		Set<String> seen = new LinkedHashSet<>();
		from.breadthFirst(from.upwards())
			.map(x -> x.properties.get(prop))
			.filter(x -> x != null)
			.flatMap(x -> x.entrySet()
				.stream())
			.forEach(x -> {
				if (seen.add(x.getKey()))
					x.getValue().apply(from);
			});
	}