* the underlying output stream that will perform the writes.
* @return the writer
* @see com.thoughtworks.xstream.io.HierarchicalStreamDriver#createWriter(java.io.Writer)
*/
public HierarchicalStreamWriter createWriter(OutputStream outputStream) {
HierarchicalStreamWriter parentWriter = parent.createWriter(outputStream);
return new StackWriterWrapper(parentWriter, writerStack, namespaces);
}