src/Traits/AbstractGatewayDefaultParametersGettersAndSettersTrait.php
private function setDefaultCurrency($country)
    {
        switch ($country) {
            case 'DK':
                return $this->setCurrency('DKK');
            case 'NO':
                return $this->setCurrency('NOK');
            case 'SE':
                return $this->setCurrency('SEK');
            case 'AT':
            case 'BE':
            case 'CY':
            case 'DE':
            case 'EE':
            case 'ES':
            case 'FI':
            case 'FR':
            case 'GR':
            case 'IE':
            case 'IT':
            case 'LT':
            case 'LU':
            case 'LV':
            case 'MT':
            case 'NL':
            case 'PT':
            case 'SI':
            case 'SK':
                return $this->setCurrency('EUR');
            default:
        }
        return $this->setCurrency('');
    }
private function setDefaultCurrency($country)
    {
        switch ($country) {
            case 'DK':
                return $this->setCurrency('DKK');
            case 'NO':
                return $this->setCurrency('NOK');
            case 'SE':
                return $this->setCurrency('SEK');
            case 'AT':
            case 'BE':
            case 'CY':
            case 'DE':
            case 'EE':
            case 'ES':
            case 'FI':
            case 'FR':
            case 'GR':
            case 'IE':
            case 'IT':
            case 'LT':
            case 'LU':
            case 'LV':
            case 'MT':
            case 'NL':
            case 'PT':
            case 'SI':
            case 'SK':
                return $this->setCurrency('EUR');
            default:
        }
        return $this->setCurrency('');
    }
Sets default currency for country according to current (May 2015) situation

@param string $country
@return $this