}
else if (c instanceof DeltaIterationBase) {
n = new WorksetIterationNode((DeltaIterationBase<?, ?>) c);
}
else if (c instanceof Union){
n = new BinaryUnionNode((Union<?>) c);
}
else if (c instanceof PartitionOperatorBase) {
n = new PartitionNode((PartitionOperatorBase<?>) c);
}
else if (c instanceof PartialSolutionPlaceHolder) {