code: public DataSetMetadata getMetadata(String uuid) {
          DataSetMetadata metadata = clientDataSetManager.getDataSetMetadata(uuid);
          if (metadata != null) {
              return metadata;
          }
  
          return remoteMetadataMap.get(uuid);
      }
docs: Get the cached metadata instance for the specified data set.
  
  @param uuid The UUID of the data set. Null if the metadata is not stored on client yet.