Delete a znode atomically if it does not any more children.
1. Get stats 2. if (stats->num_children == 0) delete(if the version is same && cversion is same) Does version of a znode also reflects changes to its children? From documentation: version The number of changes to the data of this znode. cversion The number of changes to the children of this znode. The problem is, delete api accept version but does not accept cversion.