algoliasearch/src/main/java/com/algolia/search/saas/Client.java
public Request deleteIndexAsync(final @NonNull String indexName, @Nullable final RequestOptions requestOptions, CompletionHandler completionHandler) {
        return new AsyncTaskRequest(completionHandler) {
            @NonNull
            @Override
            protected JSONObject run() throws AlgoliaException {
                return deleteIndex(indexName, requestOptions);
            }
        }.start();
    }
public Request deleteIndexAsync(final @NonNull String indexName, @Nullable final RequestOptions requestOptions, CompletionHandler completionHandler) {
        return new AsyncTaskRequest(completionHandler) {
            @NonNull
            @Override
            protected JSONObject run() throws AlgoliaException {
                return deleteIndex(indexName, requestOptions);
            }
        }.start();
    }
Delete an index.

@param indexName         Name of index to delete.
@param requestOptions    Request-specific options.
@param completionHandler The listener that will be notified of the request's outcome.
@return A cancellable request.