public String getApiPingSearchEngineFields() {
            return "cluster_name,status,timed_out,number_of_nodes,number_of_data_nodes,active_primary_shards,active_shards,relocating_shards,initializing_shards,unassigned_shards,delayed_unassigned_shards,number_of_pending_tasks,number_of_in_flight_fetch,task_max_waiting_in_queue_millis,active_shards_percent_as_number";
        }

        @Override
        public boolean hasNotification() {

            engineObj.relocatingShards = response.getRelocatingShards();
            engineObj.initializingShards = response.getInitializingShards();
            engineObj.unassignedShards = response.getUnassignedShards();
            engineObj.delayedUnassignedShards = response.getDelayedUnassignedShards();
            engineObj.numberOfPendingTasks = response.getNumberOfPendingTasks();