public function checkExistence($tax_document)
    {
        try {
            $this->getByPathNoPopulate(sprintf('/%s/%s/%s?tax_document=%s', MoipResource::VERSION, self::PATH, 'exists', $tax_document));

            return true;
        } catch (ValidationException $e) {
            if ($e->getStatusCode() != 404) {
                throw new ValidationException($e->getStatusCode(), $e->getErrors());
            }
        }

        return false;
    }