code: public int getSize()
    {
      int size = length();
      
      if (_blobs == null) {
        return size;
      }
      
      for (BlobOutputStream blob : _blobs) {
        if (blob != null) {
          size += blob.getSize();
        }
      }
      
      return size;
    }
docs: The size includes the dynamic size from any blobs