public function deleteFlowFlag($tag_id)
{
$tag = $this->getById($tag_id);
if (!$tag) {
return false;
}
$object = array();
$object["flow_flag"] = self::FLOW_FLAG_OFF;
$wkey["id"] = $tag_id;
$ret = $this->update($object, $wkey);
return $this->getById($tag_id);
}