return mParser->OnDataAvailable(channel, ctxt, inStr, sourceOffset, count);
return mListener->OnDataAvailable(request, ctxt, inStr, sourceOffset, count);
RDFXMLDataSourceImpl::OnDataAvailable(nsIChannel *channel,                                      nsISupports *ctxt,                                      nsIInputStream *inStr,                                      PRUint32 sourceOffset,                                      PRUint32 count){    return mParser->OnDataAvailable(channel, ctxt, inStr, sourceOffset, count);}