/**
  * Gets the active currency using the billing country.
  *
  * @return string
  */
 protected function get_currency_by_billing_country()
 {
     $billing_country = $this->get_billing_country();
     $currency = WC_Aelia_Currencies_Manager::factory()->get_country_currency($billing_country);
     // If currency used in the billing country is not enabled, take the default
     // used for GeoIP
     if (!$this->is_valid_currency($currency)) {
         $currency = self::settings()->default_geoip_currency();
     }
     // Debug
     //var_dump("CURRENCY BY BILLING COUNTRY: $currency");
     return $currency;
 }