@Override
  public boolean isRemovedFromDisk() {
    return Token.isRemovedFromDisk(getValueAsToken());
  }
Returns true if the DiskEntry value is equal to {@link Token#DESTROYED},
{@link Token#REMOVED_PHASE1}, or {@link Token#REMOVED_PHASE2}.
geode-core/src/main/java/org/apache/geode/internal/cache/entries/AbstractOplogDiskRegionEntry.java