code: public ArrayList<String> veeamCloudConnect_serviceName_upgrade_GET(String serviceName, OvhOffer offer) throws IOException {
  		String qPath = "/order/veeamCloudConnect/{serviceName}/upgrade";
  		StringBuilder sb = path(qPath, serviceName);
  		query(sb, "offer", offer);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, t1);
  	}
docs: Get allowed durations for 'upgrade' option
  
  REST: GET /order/veeamCloudConnect/{serviceName}/upgrade
  @param offer [required] The offer on which you want to be upgraded
  @param serviceName [required]