### Question:
StoreApi { public CompletableFuture<Void> deleteOrder(String orderId) throws ApiException { try { HttpRequest.Builder localVarRequestBuilder = deleteOrderRequestBuilder(orderId); return memberVarHttpClient.sendAsync( localVarRequestBuilder.build(), HttpResponse.BodyHandlers.ofString()).thenComposeAsync(localVarResponse -> { if (localVarResponse.statusCode()/ 100 != 2) { return CompletableFuture.failedFuture(getApiException("deleteOrder", localVarResponse)); } return CompletableFuture.completedFuture(null); }); } catch (ApiException e) { return CompletableFuture.failedFuture(e); } } StoreApi();  StoreApi(ApiClient apiClient); CompletableFuture<Void> deleteOrder(String orderId); CompletableFuture<ApiResponse<Void>> deleteOrderWithHttpInfo(String orderId); CompletableFuture<Map<String, Integer>> getInventory(); CompletableFuture<ApiResponse<Map<String, Integer>>> getInventoryWithHttpInfo(); CompletableFuture<Order> getOrderById(Long orderId); CompletableFuture<ApiResponse<Order>> getOrderByIdWithHttpInfo(Long orderId); CompletableFuture<Order> placeOrder(Order body); CompletableFuture<ApiResponse<Order>> placeOrderWithHttpInfo(Order body);  }### Answer:
@Test public void deleteOrderTest() throws ApiException { String orderId = null; CompletableFuture<Void> response = api.deleteOrder(orderId); }