/**
* Calls the GetMid SOPG web service method.
*
* @param username
* Username to use for the web service call.
* @param password
* Password to use for the web service call.
* @param currency
* Currency to use for the web service call. It must contain a 3
* letter ISO 4217 currency code.
* @return Response containing mid configured for the given currency. The call
* was successful if resultCode and errorCode of the response are 0.
* For list of possible error codes refer to merchant documentation.
* @throws InvalidArgumentException
* If required parameters are null or empty.
*/
public function getMid($username, $password, $currency)
{
Validators::validateStringNotNull($username, 'username');
Validators::validateStringNotNull($password, 'password');
Validators::validateCurrency($currency);
$params = array('username' => $username, 'password' => $password, 'currency' => strtoupper($currency));
$response = $this->client->getMid($params);
return $response->getMidReturn;
}
