Nelmio\Alice\Bridge\Symfony\DependencyInjection\Configuration::createPositiveIntegerValidatorClosure PHP Method

    private function createPositiveIntegerValidatorClosure() : \Closure
    {
        return function ($value) {
            if (is_int($value) && 0 < $value) {
                return $value;
            }
            throw InvalidArgumentExceptionFactory::createForExpectedConfigurationPositiveIntegerValue($value);
        };
    }