@Override
      public Object call() {
        TXManagerImpl mgr = getCache().getTxManager();
        mgr.resume(putTxId2);
        TXStateProxy tx = mgr.pauseTransaction();
        assertThat(tx).isNotNull();
        mgr.unpauseTransaction(tx);
        mgr.commit();
        return null;
      }
@return first key found on the given member
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/RemoteTransactionDUnitTest.java