private void setXMLOutlineInput() {
    IDocumentProvider provider = fEditor.getDocumentProvider();

    // force creation of the document & the model.
    IDocument document = provider.getDocument(fEditor.getEditorInput());
    IXMLModelProvider modelProvider = UIPlugin.getDefault().getXMLModelProvider();
    XMLReconciler model = (modelProvider).getModel(document);
    fXMLOutlinePage.setInput(model.getRoot());
  }