public void actionPerformed(java.awt.event.ActionEvent evt) {
      SectionPanel sectionPanel = ((SectionPanel.HeaderButton) evt.getSource()).getSectionPanel();
      ExtendedServletsType servlet = (ExtendedServletsType) sectionPanel.getKey();
      // removing from data model

      try {
        dObj.setChangedFromUI(true);
        dObj.getWebExt().removeExtendedServlets(servlet);
        sectionPanel.getSectionView().removeSection(sectionPanel.getNode());
        sectionPanel.getSectionView().updateUI();
        sectionPanel.updateUI();

        dObj.modelUpdatedFromUI();

      } catch (java.io.IOException ec) {

      } finally {
        dObj.setChangedFromUI(false);
      }
    }