void add(CloudBlobMetadata cloudBlobMetadata) {
    String blobId = cloudBlobMetadata.getId();
    blobIdToMetadataMap.put(blobId, cloudBlobMetadata);
    if (blobIdToContinuationTokenMap.containsKey(blobId)) {
      continuationTokenToBlobIdMap.put(blobIdToContinuationTokenMap.get(blobId), null);
    }
    continuationTokenToBlobIdMap.put(Integer.toString(++continuationTokenCounter), blobId);
    blobIdToContinuationTokenMap.put(blobId, Integer.toString(continuationTokenCounter));
  }
Add a blobid to the change feed.
@param cloudBlobMetadata {@link CloudBlobMetadata} to add.
ambry-cloud/src/test/java/com/github/ambry/cloud/azure/MockChangeFeedQuery.java