public FormBuilder addVerticalGap(final int height) {
    if (height == -1) {
      myPanel.add(new JLabel(), new GridBagConstraints(0, myLineCount++, 2, 1, 0, 1, CENTER, NONE, JBInsets.emptyInsets(), 0, 0));
      return this;
    }

    return addLabeledComponent((JLabel)null,
                               new Box.Filler(new JBDimension(0, height), new JBDimension(0, height), new JBDimension(Short.MAX_VALUE, height)));
  }
public FormBuilder addVerticalGap(final int height)