code: public List<DiscordRecord> getTopHits(Integer num) {
      if (num >= this.discords.size()) {
        return this.discords;
      }
      List<DiscordRecord> res = this.discords.subList(this.discords.size() - num,
          this.discords.size());
      return res;
    }
docs: Returns the number of the top hits.
  
  @param num The number of instances to return. If the number larger than the storage size -
  returns the storage as is.
  @return the top discord hits.