lib/Model/Address.php
public function setCountry($country)
    {
        if ((strlen($country) > 2)) {
            throw new \InvalidArgumentException('invalid length for $country when calling Address., must be smaller than or equal to 2.');
        }
        if ((strlen($country) < 2)) {
            throw new \InvalidArgumentException('invalid length for $country when calling Address., must be bigger than or equal to 2.');
        }

        $this->container['country'] = $country;

        return $this;
    }
public function setCountry($country)
    {
        if ((strlen($country) > 2)) {
            throw new \InvalidArgumentException('invalid length for $country when calling Address., must be smaller than or equal to 2.');
        }
        if ((strlen($country) < 2)) {
            throw new \InvalidArgumentException('invalid length for $country when calling Address., must be bigger than or equal to 2.');
        }

        $this->container['country'] = $country;

        return $this;
    }
Sets country
@param string $country The ISO-3166 country code. See https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2.
@return $this