@Override
  public List<PartitionId> setBlobStoreStoppedState(List<PartitionId> partitionIds, boolean markStop) {
    throw new UnsupportedOperationException("Method not supported");
  }
Returning null because this will not be used as part of CloudStorageManager Implementation.
Implementation will be added if needed.
ambry-cloud/src/main/java/com/github/ambry/cloud/CloudStorageManager.java