src/Common/Address.php
public function setCountry($country)
    {
        if (!($country instanceof Country)) {
            $country = new Country($country);
        }
        if ($country->isEmpty()) {
            $this->invalidArguments('10001');
        }
        return $this->setParameter('country', $country);
    }
public function setCountry($country)
    {
        if (!($country instanceof Country)) {
            $country = new Country($country);
        }
        if ($country->isEmpty()) {
            $this->invalidArguments('10001');
        }
        return $this->setParameter('country', $country);
    }
Set the address country
@param Country|array $country
@return $this
@throws InvalidArgumentException