code: @Override
      public ChunksManifest write(String spaceId,
                                  ChunkableContent chunkable,
                                  Map<String, String> contentProperties)
          throws NotFoundException {
          return write(spaceId, chunkable, contentProperties, true);
      }
docs: This method implements the ContentWriter interface for writing content
  to a DataStore. In this case, the DataStore is durastore.
  
  @param spaceId   destination space of arg chunkable content
  @param chunkable content to be written
  @throws NotFoundException if space is not found