wiki-convert/wiki-asciidoc/DevFaqEditorTopComponent.asciidoc [186:250]:
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  private String content;
  private final Saver saver = new Saver();
  public FooDataObject(FileObject pf, MultiFileLoader loader) throws DataObjectExistsException, IOException {
    super(pf, loader);
    CookieSet cookies = getCookieSet();
    cookies.add(new Opener());
  }

  @Override
  public Lookup getLookup() {
    return getCookieSet().getLookup();
  }

  synchronized void setContent(String text) {
    this.content = text;
    if (text != null) {
      setModified(true);
      getCookieSet().add(saver);
    } else {
      setModified(false);
      getCookieSet().remove(saver);
    }
  }

  void editorInitialized(MyEditor ed) {
    Opener op = getLookup().lookup(Opener.class);
    op.editor = ed;
  }

  private class Opener implements OpenCookie {
    private MyEditor editor;
    @Override
    public void open() {
      if (editor == null) {
        try {
          editor = new MyEditor(FooDataObject.this);
        } catch (IOException ex) {
          Exceptions.printStackTrace(ex);
        }
      }
      editor.open();
      editor.requestActive();
    }
  }

  private class Saver implements SaveCookie {
    @Override
    public void save() throws IOException {
      String txt;
      synchronized (FooDataObject.this) {
        //synchronize access to the content field
        txt = content;
        setContent(null);
      }
      FileObject fo = getPrimaryFile();
      OutputStream out = new BufferedOutputStream(fo.getOutputStream());
      PrintWriter writer = new PrintWriter(out);
      try {
        writer.print(txt);
      } finally {
        writer.close();
        out.close();
      }
    }
  }
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wiki-export/wiki-wikimedia/DevFaqEditorTopComponent.mediawiki [139:203]:
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  private String content;
  private final Saver saver = new Saver();
  public FooDataObject(FileObject pf, MultiFileLoader loader) throws DataObjectExistsException, IOException {
    super(pf, loader);
    CookieSet cookies = getCookieSet();
    cookies.add(new Opener());
  }

  @Override
  public Lookup getLookup() {
    return getCookieSet().getLookup();
  }

  synchronized void setContent(String text) {
    this.content = text;
    if (text != null) {
      setModified(true);
      getCookieSet().add(saver);
    } else {
      setModified(false);
      getCookieSet().remove(saver);
    }
  }

  void editorInitialized(MyEditor ed) {
    Opener op = getLookup().lookup(Opener.class);
    op.editor = ed;
  }

  private class Opener implements OpenCookie {
    private MyEditor editor;
    @Override
    public void open() {
      if (editor == null) {
        try {
          editor = new MyEditor(FooDataObject.this);
        } catch (IOException ex) {
          Exceptions.printStackTrace(ex);
        }
      }
      editor.open();
      editor.requestActive();
    }
  }

  private class Saver implements SaveCookie {
    @Override
    public void save() throws IOException {
      String txt;
      synchronized (FooDataObject.this) {
        //synchronize access to the content field
        txt = content;
        setContent(null);
      }
      FileObject fo = getPrimaryFile();
      OutputStream out = new BufferedOutputStream(fo.getOutputStream());
      PrintWriter writer = new PrintWriter(out);
      try {
        writer.print(txt);
      } finally {
        writer.close();
        out.close();
      }
    }
  }
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