public function post(...$keys)
    {
        if(!$keys) {
            return $this->request->values;
        }
        elseif(count($keys) === 1) {
            return $this->request->value($keys[0]);
        }

        $values = [];
        foreach($keys as $key) {
            $values[] = $this->request->value($key);
        }
        return $values;
    }