algoliasearch/src/main/java/com/algolia/search/saas/Index.java
public Request partialUpdateObjectsAsync(final @NonNull JSONArray partialObjects, final boolean createIfNotExists, @Nullable final RequestOptions requestOptions, @Nullable CompletionHandler completionHandler) {
        return getClient().new AsyncTaskRequest(completionHandler) {
            @NonNull
            @Override protected JSONObject run() throws AlgoliaException {
                return partialUpdateObjects(partialObjects, createIfNotExists, requestOptions);
            }
        }.start();
    }
public Request partialUpdateObjectsAsync(final @NonNull JSONArray partialObjects, final boolean createIfNotExists, @Nullable final RequestOptions requestOptions, @Nullable CompletionHandler completionHandler) {
        return getClient().new AsyncTaskRequest(completionHandler) {
            @NonNull
            @Override protected JSONObject run() throws AlgoliaException {
                return partialUpdateObjects(partialObjects, createIfNotExists, requestOptions);
            }
        }.start();
    }
Partially update several objects (asynchronously).

@param partialObjects    New values/operations for the objects. Each object must contain an <code>objectID</code>
attribute.
@param createIfNotExists Whether objects should be created if they do not exist already.
@param requestOptions    Request-specific options.
@param completionHandler The listener that will be notified of the request's outcome.
@return A cancellable request.