@After
  public void stop() throws Exception {
    manager.stopAllActiveContainers();
    manager.cleanUp();

    CommandStringBuilder command = new CommandStringBuilder(CliStrings.STOP_SERVER);
    command.addOption(CliStrings.STOP_SERVER__DIR, serverDir);
    gfsh.executeAndAssertThat(command.toString()).statusIsSuccess();

    CommandStringBuilder locStop = new CommandStringBuilder(CliStrings.STOP_LOCATOR);
    locStop.addOption(CliStrings.STOP_LOCATOR__DIR, locatorDir);
    gfsh.executeAndAssertThat(locStop.toString()).statusIsSuccess();
  }
Stops all containers that were previously started and cleans up their configurations
geode-assembly/src/upgradeTest/java/org/apache/geode/session/tests/TomcatSessionBackwardsCompatibilityTestBase.java