code: public static base_response update(nitro_service client, filterpolicy resource) throws Exception {
  		filterpolicy updateresource = new filterpolicy();
  		updateresource.name = resource.name;
  		updateresource.rule = resource.rule;
  		updateresource.reqaction = resource.reqaction;
  		updateresource.resaction = resource.resaction;
  		return updateresource.update_resource(client);
  	}
docs: Use this API to update filterpolicy.