ResultItem rsItem = rs.next();
XdmItem item = rsItem.getItem();
// FIXME: This needs work...
if (item instanceof XdmDocument || item instanceof XdmElement) {
XdmNode xccXML = parseString(item.asString());
result.write(xccXML);
} else if (item instanceof XdmBinary) {
String base64 = Base64.encodeBytes(((XdmBinary) item).asBinaryData());
TreeWriter treeWriter = new TreeWriter(runtime);
treeWriter.startDocument(step.getNode().getBaseURI());