private void switchToTab(SETab tab) {
    boolean prevTabIsSingleContributor = myHeader.getSelectedTab().isSingleContributor();
    myHeader.switchToTab(tab);
    boolean nextTabIsSingleContributor = myHeader.getSelectedTab().isSingleContributor();

    updateSearchFieldAdvertisement();

    if (prevTabIsSingleContributor != nextTabIsSingleContributor) {
      //reset cell renderer to show/hide group titles in "All" tab
      myResultsList.setCellRenderer(myResultsList.getCellRenderer());
    }
  }
private void switchToTab(SETab tab)