message: added parse attribute func
diff: @@ -51,6 +51,7 @@ void BP4Deserializer::ParseMetadata(const BufferSTL &bufferSTL, core::IO &io)
  {
  ParsePGIndexPerStep(bufferSTL, io, 0, i+1);
  ParseVariablesIndexPerStep(bufferSTL, io, 0, i+1);
  + ParseAttributesIndexPerStep(bufferSTL, io, 0, i+1);
  }
  }
  