static PersistentMemberID createNewPMID() {
    return new PersistentMemberID(DiskStoreID.random(), null, null, ++pmidCtr, (short) 0);
  }
Make sure that disk store oplog files from another instance of a disk store are not allowed
when loading the other disk store
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskIFJUnitTest.java