public function copyRule(Ingo_Rule $rule)
{
if ($rule instanceof Ingo_Rule_System || ($key = $this->_getRule($rule)) === null) {
return false;
}
$newrule = clone $this->_rules[$key];
$newrule->name = sprintf(_("Copy of %s"), $newrule->name);
$newrule->uid = '';
$this->_rules = array_values(array_merge(array_slice($this->_rules, 0, $key + 1), array($newrule), array_slice($this->_rules, $key + 1)));
$this->_store(self::STORE_ADD, $newrule);
return true;
}