private InternalDistributedMember getId(VM vm) {
    return vm.invoke("get dmId", () -> {
      return testRegion.getCache().getMyId();
    });
  }
We hit this problem in bug #45669. delta-GII was not being distributed in the 7.0 release.
geode-core/src/distributedTest/java/org/apache/geode/cache30/RRSynchronizationDUnitTest.java