code: public static base_response add(nitro_service client, vpnsessionpolicy resource) throws Exception {
  		vpnsessionpolicy addresource = new vpnsessionpolicy();
  		addresource.name = resource.name;
  		addresource.rule = resource.rule;
  		addresource.action = resource.action;
  		return addresource.add_resource(client);
  	}
docs: Use this API to add vpnsessionpolicy.