### Question:
StoreApi { public Order placeOrder(Order body) throws ApiException { Object localVarPostBody = body; if (body == null) { throw new ApiException(400, "Missing the required parameter 'body' when calling placeOrder"); } String localVarPath = "/store/order"; List<Pair> localVarQueryParams = new ArrayList<Pair>(); List<Pair> localVarCollectionQueryParams = new ArrayList<Pair>(); Map<String, String> localVarHeaderParams = new HashMap<String, String>(); Map<String, String> localVarCookieParams = new HashMap<String, String>(); Map<String, Object> localVarFormParams = new HashMap<String, Object>(); final String[] localVarAccepts = { "application/xml", "application/json" }; final String localVarAccept = apiClient.selectHeaderAccept(localVarAccepts); final String[] localVarContentTypes = { }; final String localVarContentType = apiClient.selectHeaderContentType(localVarContentTypes); String[] localVarAuthNames = new String[] { }; GenericType<Order> localVarReturnType = new GenericType<Order>() {}; return apiClient.invokeAPI(localVarPath, "POST", localVarQueryParams, localVarCollectionQueryParams, localVarPostBody, localVarHeaderParams, localVarCookieParams, localVarFormParams, localVarAccept, localVarContentType, localVarAuthNames, localVarReturnType); } StoreApi();  StoreApi(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); void deleteOrder(String orderId); Map<String, Integer> getInventory(); Order getOrderById(Long orderId); Order placeOrder(Order body);  }### Answer:
@Test public void placeOrderTest() throws ApiException { Order order = null; Order response = api.placeOrder(order); }