algoliasearch/src/main/java/com/algolia/search/saas/Searchable.java
public Request searchAsync(@Nullable Query query, @Nullable CompletionHandler completionHandler) {
		return searchAsync(query, /* requestOptions: */ null, completionHandler);
	}
public Request searchAsync(@Nullable Query query, @Nullable CompletionHandler completionHandler) {
		return searchAsync(query, /* requestOptions: */ null, completionHandler);
	}
Search inside this index (asynchronously).

@param query             Search parameters. May be null to use an empty query.
@param completionHandler The listener that will be notified of the request's outcome.
@return A cancellable request.