algoliasearch/src/main/java/com/algolia/search/saas/Index.java
public Request addObjectsAsync(final @NonNull JSONArray objects, @Nullable CompletionHandler completionHandler) {
        return addObjectsAsync(objects, /* requestOptions: */ null, completionHandler);
    }
public Request addObjectsAsync(final @NonNull JSONArray objects, @Nullable CompletionHandler completionHandler) {
        return addObjectsAsync(objects, /* requestOptions: */ null, completionHandler);
    }
Adds several objects to this index (asynchronously).

@param objects           Objects to add.
@param completionHandler The listener that will be notified of the request's outcome.
@return A cancellable request.