public function remove($recursive = false)
{
if ($recursive) {
$children = $this->getDescendantsId();
$this->_db->delete($this->_table, array($this->_pk => $children));
parent::remove();
} else {
$children = $this->getChildren();
if (count($children)) {
throw new Model_Exception("Can't remove non-leaf tree item");
} else {
parent::remove();
}
}
}
