if (nl != null){
int i;
if (nl.getLength() > 0) {
retVal = new DimensionTreeElement[nl.getLength()];
for (i = 0; i < nl.getLength(); i++) {
retVal[i] = new FilterTreeLevelElement(this, nl.item(i), restrictions, properties);
}
}
}
// S.out("got levels back... level count=" + retVal.length);
}catch(Exception e){