code: public static int getIsolationLevel(SynchronizationRegistryUOWScope txKey) {
          ContainerTx ctx = (ContainerTx) txKey.getResource(containerTxResourceKey);
          if (ctx == null) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isEventEnabled())
                  Tr.event(tc, "ContainerTx is null, returning default");
              return com.ibm.websphere.csi.Defaults.DEFAULT_ISOLATION_LEVEL;
          } else {
              int isolationLevel = ctx.getIsolationLevel();
              // The new code may return NONE, so convert to old default.   d107762
              if (isolationLevel == java.sql.Connection.TRANSACTION_NONE)
                  isolationLevel = com.ibm.websphere.csi.Defaults.DEFAULT_ISOLATION_LEVEL;
              return isolationLevel;
          }
      }
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