public final static List<ModelType<?>> TYPES = ImmutableList.<ModelType<?>>of(
        ModelType.of(List.class),
        ModelType.of(Set.class)
    );

    @Override
    protected <T, E> NodeInitializer extractNodeInitializer(CollectionSchema<T, E> schema, NodeInitializerContext<T> context) {
        ModelType<T> type = schema.getType();
        Class<? super T> rawClass = type.getRawClass();