private void endCacheTransactionManager() {
    CacheTransactionManagerCreation txMgrCreation = (CacheTransactionManagerCreation) stack.pop();
    cache.addCacheTransactionManagerCreation(txMgrCreation);
  }
Add the <code>transaction-manager</code> creation code to the cache creation code
geode-core/src/main/java/org/apache/geode/internal/cache/xmlcache/CacheXmlParser.java