code: public ArrayList<String> email_exchange_organizationName_service_exchangeService_accountUpgrade_GET(String organizationName, String exchangeService, OvhAccountQuotaEnum newQuota, String primaryEmailAddress) throws IOException {
  		String qPath = "/order/email/exchange/{organizationName}/service/{exchangeService}/accountUpgrade";
  		StringBuilder sb = path(qPath, organizationName, exchangeService);
  		query(sb, "newQuota", newQuota);
  		query(sb, "primaryEmailAddress", primaryEmailAddress);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, t1);
  	}
docs: Get allowed durations for 'accountUpgrade' option
  
  REST: GET /order/email/exchange/{organizationName}/service/{exchangeService}/accountUpgrade
  @param newQuota [required] New storage quota for that account
  @param primaryEmailAddress [required] The account you wish to upgrade
  @param organizationName [required] The internal name of your exchange organization
  @param exchangeService [required] The internal name of your exchange service