protected Set<Pair<Short, Short>> getDeletedContainers() {
    Set<Container> deletedContainers = AccountUtils.getDeprecatedContainers(accountService, storeConfig.storeContainerDeletionRetentionDays);
    Set<Pair<Short, Short>> accountContainerPairSet = new HashSet<>();
    for (Container container: deletedContainers) {
      accountContainerPairSet.add(new Pair<>(container.getParentAccountId(), container.getId()));
    }
    return accountContainerPairSet;
  }
@return Returns containers from account-service which are in DELETE_IN_PROGRESS state for N days
ambry-cloud/src/main/java/com/github/ambry/cloud/azure/AzureCloudDestinationSync.java