public function getClass()
    {
        if (is_string($this->fn)) {
            return $this->fn;
        }
        $hash = sha1(mt_rand().microtime(true));
        return "sndsgd\\field\\rule\\Closure($hash)";
    }
public function getClass()
    {
        if (is_string($this->fn)) {
            return $this->fn;
        }
        $hash = sha1(mt_rand().microtime(true));
        return "sndsgd\\field\\rule\\Closure($hash)";
    }
public function getClass ( ) { if ( is_string ( $ this -> fn ) ) { return $ this -> fn ; } $ hash = sha1 ( mt_rand ( ) . microtime ( true ) ) ; return "sndsgd\\field\\rule\\Closure($hash)" ; }
Ensure that multiple Closure rules can be added to a field

@return string
Ensure that multiple Closure rules can be added to a field