// was the initial source document.
base = xctxt.getNamespaceContext().getBaseIdentifier();
}
XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
NodeSetDTM mnl = nodes.mutableNodeset();
DTMIterator iterator = (XObject.CLASS_NODESET == arg.getType())
? arg.iter() : null;
int pos = DTM.NULL;
while ((null == iterator) || (DTM.NULL != (pos = iterator.nextNode())))