private boolean isTransactionPaused() {
    TXManagerImpl txMgr = (TXManagerImpl) getCache().getCacheTransactionManager();
    return txMgr.isTransactionPaused();
  }
Do the expensive work of discovering an existing JTA transaction Only needs to be called at
Region.Entry entry points e.g. Region.put, Region.invalidate, etc.

@since GemFire tx
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java