algoliasearch/src/main/java/com/algolia/search/saas/Client.java
public Request batchAsync(final @NonNull JSONArray operations, CompletionHandler completionHandler) {
        return batchAsync(operations, /* requestOptions: */ null, completionHandler);
    }
public Request batchAsync(final @NonNull JSONArray operations, CompletionHandler completionHandler) {
        return batchAsync(operations, /* requestOptions: */ null, completionHandler);
    }
Batch operations.

@param operations        List of operations.
@param completionHandler The listener that will be notified of the request's outcome.
@return A cancellable request.