@Override
public final Item atomItem(final QueryContext qc, final InputInfo ii) throws QueryException {
final Item it1 = item(qc, info);
return it1 == null ? null : it1.atomItem(info);
}
/**
* Checks if the specified item yields a node or item. Returns the item or throws an exception.
*
* @param it item to be checked (can be {@code null})
* @return node or atomized item
* @throws QueryException query exception
*/
protected final Item toNodeOrAtomItem(final Item it) throws QueryException {
return it == null || it instanceof ANode ? it : it.atomItem(info);
}