code: public String nonPipelineZRANGE(String key, int max_score) {
          StringBuilder sb = new StringBuilder();
          // Return all elements
          Set<String> returnEntries = this.jedisClient.get().zrange(key, 0, -1);
          if (returnEntries.isEmpty()) {
              logger.error("The number of entries in the sorted set are less than the number of entries written");
              return null;
          }
  
          returnEntries.forEach(sb::append);
          return sb.toString();
      }
docs: Exercising ZRANGE to receive all keys between 0 and MAX_SCORE
  
  @param key