code: public static base_response add(nitro_service client, vpnvserver resource) throws Exception {
  		vpnvserver addresource = new vpnvserver();
  		addresource.name = resource.name;
  		addresource.servicetype = resource.servicetype;
  		addresource.ipv46 = resource.ipv46;
  		addresource.range = resource.range;
  		addresource.port = resource.port;
  		addresource.state = resource.state;
  		addresource.authentication = resource.authentication;
  		addresource.doublehop = resource.doublehop;
  		addresource.maxaaausers = resource.maxaaausers;
  		addresource.icaonly = resource.icaonly;
  		addresource.downstateflush = resource.downstateflush;
  		addresource.listenpolicy = resource.listenpolicy;
  		addresource.listenpriority = resource.listenpriority;
  		addresource.tcpprofilename = resource.tcpprofilename;
  		addresource.httpprofilename = resource.httpprofilename;
  		addresource.comment = resource.comment;
  		addresource.appflowlog = resource.appflowlog;
  		addresource.icmpvsrresponse = resource.icmpvsrresponse;
  		addresource.netprofile = resource.netprofile;
  		addresource.cginfrahomepageredirect = resource.cginfrahomepageredirect;
  		addresource.maxloginattempts = resource.maxloginattempts;
  		addresource.failedlogintimeout = resource.failedlogintimeout;
  		return addresource.add_resource(client);
  	}
docs: Use this API to add vpnvserver.