code: public OvhOrderUpgradeOperationAndOrder upgrade_sslGateway_serviceName_planCode_POST(String serviceName, String planCode, Boolean autoPayWithPreferredPaymentMethod, Long quantity) throws IOException {
  		String qPath = "/order/upgrade/sslGateway/{serviceName}/{planCode}";
  		StringBuilder sb = path(qPath, serviceName, planCode);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "autoPayWithPreferredPaymentMethod", autoPayWithPreferredPaymentMethod);
  		addBody(o, "quantity", quantity);
  		String resp = exec(qPath, "POST", sb.toString(), o);
  		return convertTo(resp, OvhOrderUpgradeOperationAndOrder.class);
  	}
docs: Perform the requested upgrade of your service
  
  REST: POST /order/upgrade/sslGateway/{serviceName}/{planCode}
  @param planCode [required] Plan code of the offer you want to upgrade to
  @param autoPayWithPreferredPaymentMethod [required] Indicates that order will be automatically paid with preferred payment method
  @param quantity [required] Quantity you want to upgrade to
  @param serviceName [required] The internal ID of SSL Gateway service
  
  API beta