code: public List<Bucket> getBuckets() {
          List<Bucket> result = Lists.newArrayList();
          for (File file : getBaseDir().listFiles()) {
              if (file.isDirectory()) {
                  result.add(new Bucket(file));
              }
          }
  
          return result;
      }
docs: Enumerates all known buckets.
  
  @return a list of all known buckets