code: public void replaceRowTab(String tabLabel, Component object, String toolTipText) {
          int index = indexOfComponent(rowsTab);
          remove(index);
          ImageIcon rowsIcon = createImageIcon("/kg/apc/jmeter/img/checks.png");
          insertTab(tabLabel, rowsIcon, object, toolTipText, index);
      }
docs: Method used only for change row selector tab in Composite Chart
  
  @param tabLabel    the new tab label
  @param object      the new Panel to add in the tab
  @param toolTipText the new tooltip text