docs: private String tabBrowsers() {
      StringBuilder builder = new StringBuilder();
      builder.append("<div type='browsers' class='content_detail'>");
  
      SlotsLines rcLines = new SlotsLines();
      SlotsLines wdLines = new SlotsLines();
  
      for (TestSlot slot : proxy.getTestSlots()) {
        if (slot.getProtocol() == SeleniumProtocol.Selenium) {
          rcLines.add(slot);
        } else {
          wdLines.add(slot);
        }
      }
  
      if (rcLines.getLinesType().size() != 0) {
        builder.append("<p class='protocol' >Remote Control (legacy)</p>");
        builder.append(getLines(rcLines));
      }
      if (wdLines.getLinesType().size() != 0) {
        builder.append("<p class='protocol' >WebDriver</p>");
        builder.append(getLines(wdLines));
      }
      builder.append("</div>");
      return builder.toString();
    }