public function addRules(array $rules, $ruleset = null)
{
if ($ruleset) {
$newRules = array_merge($this->getRuleset($ruleset), $rules);
$this->setRuleset($newRules, $ruleset);
} else {
$newRules = array_merge($this->getRules(), $rules);
$this->setRules($newRules);
}
}