/** **************************************** */
  public boolean adbStop(String serialNo) {
    ToolsManager toolsManager = mTestManager.getToolsManager();
    AdbTool adbTool = toolsManager.createAdbTool();

    adbTool.addArgument("-s", serialNo, "emu", "kill");
    try {
      Result result = adbTool.execute();
      return result.getExitCode() == 0;
    } catch (Exception ex) {
      mLog.e(ex, "Failed to stop emulator \"%s\" using adb.", serialNo);
      return false;
    }
  }