Respect\Validation\Rules\AbstractComposite::hasRule PHP Метод

    public function hasRule($validator)
    {
        if (empty($this->rules)) {
            return false;
        }
        if ($validator instanceof Validatable) {
            return isset($this->rules[spl_object_hash($validator)]);
        }
        if (is_string($validator)) {
            foreach ($this->rules as $rule) {
                if (get_class($rule) == __NAMESPACE__ . '\\' . $validator) {
                    return true;
                }
            }
        }
        return false;
    }