protected void startClusterWithTomcat(String tomcatClassPath) throws Exception {
    startLocator("loc", tomcatClassPath, locatorPort);
    startServer("server", tomcatClassPath, locatorPort);
  }
This test iterates through the versions of Geode and executes session client compatibility with
the current version of Geode.
geode-assembly/src/upgradeTest/java/org/apache/geode/session/tests/TomcatSessionBackwardsCompatibilityTestBase.java