Jackalope\ObjectManager::purgeDisappearedNode PHP Method

    public function purgeDisappearedNode($absPath, $keepChanges)
    {
        if (array_key_exists($absPath, $this->objectsByPath['Node'])) {
            $item = $this->objectsByPath['Node'][$absPath];
            if ($keepChanges && ($item->isNew() || $this->getMoveSrcPath($absPath))) {
                // we keep changes and this is a new node or it moved here
                return false;
            }
            // may not use $item->getIdentifier here - leads to endless loop if node purges itself
            $uuid = array_search($absPath, $this->objectsByUuid);
            if (false !== $uuid) {
                unset($this->objectsByUuid[$uuid]);
            }
            unset($this->objectsByPath['Node'][$absPath]);
            $item->setDeleted();
        }
        // if the node moved away from this node, we did not find it in
        // objectsByPath and the calling parent node can forget it
        return true;
    }