code: public SIMPTransactionManager getTXManager() {
          if (TraceComponent.isAnyTracingEnabled()
              && tc.isEntryEnabled())
              SibTr.entry(tc, "getTXManager");
  
          if (TraceComponent.isAnyTracingEnabled()
              && tc.isEntryEnabled())
              SibTr.exit(tc, "getTXManager", _txManager);
  
          return _txManager;
      }
docs: Get the Transaction Manager