@Override
    public void memberDeparted(DistributionManager distributionManager,
        InternalDistributedMember id, boolean crashed) {
      memberDeparted.set(true);
    }
Successful if a member performs a full backup when its backup data is not present in the
performBackupBaseline (for whatever reason). This also tests what happens when a member is
offline during the performBackupBaseline backup.

<p>
The test is regarded as successful when all of the missing members oplog files are backed up
during an performBackupIncremental backup. This means that the member performed a full backup
because its oplogs were missing in the performBackupBaseline.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/backup/IncrementalBackupDistributedTest.java