public function validateConverterClass($attribute, $params)
    {
        $className = $this->$attribute;
        if (class_exists($className) === true) {
            if (new $className instanceof MeasureConverterInterface === false) {
                $this->addError($attribute, MeasureHelper::t('Class does not implement `DevGroup\Measure\converters\MeasureConverterInterface` interface'));
            }
        } else {
            $this->addError($attribute, MeasureHelper::t('Class not found'));
        }
    }