SendOutput option of Rainbow Kit Extraction Step not working for XLIFF Packages

When the Rainbow Kit Extraction Step is used with sendOutput=true and writerClass=net.sf.okapi.steps.rainbowkit.xliff.XLIFFPackageWriter it should pass on a RaDocument event for each XLIFF file that it extracts.

But it's not doing that. The XLIFFPackageWriter overrides the handleEvent method from the BasePackageWriter and it does not return the RawDocument event generated by it's processEndDocument method.