code: public OvhVoIPLineOrder packName_voipLine_services_POST(String packName, String[] hardwareNames, String mondialRelayId, String shippingId) throws IOException {
  		String qPath = "/pack/xdsl/{packName}/voipLine/services";
  		StringBuilder sb = path(qPath, packName);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "hardwareNames", hardwareNames);
  		addBody(o, "mondialRelayId", mondialRelayId);
  		addBody(o, "shippingId", shippingId);
  		String resp = exec(qPath, "POST", sb.toString(), o);
  		return convertTo(resp, OvhVoIPLineOrder.class);
  	}
docs: Activate a voip line service
  
  REST: POST /pack/xdsl/{packName}/voipLine/services
  @param mondialRelayId [required] Mondial relay ID
  @param hardwareNames [required] List of names from hardwares call
  @param shippingId [required] Shipping ID for the order
  @param packName [required] The internal name of your pack