code: public static String info(Jedis jedis, String section) {
          if (section == null || "".equals(section))
              return jedis.info();
          else
              return jedis.info(section);
      }
docs: https://redis.io/commands/info
  
  @param jedis   jedis object
  @param section server, clients, memory, persistence, stats, replication, cpu, commandstats, cluster, keyspace
  @return info string