}
else if (c instanceof CollectorMapOperatorBase) {
n = new CollectorMapNode((CollectorMapOperatorBase<?, ?, ?>) c);
}
else if (c instanceof FlatMapOperatorBase) {
n = new FlatMapNode((FlatMapOperatorBase<?, ?, ?>) c);
}
else if (c instanceof FilterOperatorBase) {
n = new FilterNode((FilterOperatorBase<?, ?>) c);
}
else if (c instanceof ReduceOperatorBase) {