Testing OData services using Visual Studio Code extensions

Using the Swagger user interface to test OData controllers can quickly get clumsy. A better tool is the Visual Studio Code extension named REST Client:

1. If you have not already installed REST Client by Huachao Mao (humao.rest-client), then install it in Visual Studio Code now.

   If you have only been using Visual Studio 2022 up to this point, you must install Visual Studio Code now, even if you only use it to run this useful REST Client extension.

2. In your preferred code editor, start the Northwind.OData.Service project web service and leave it running.
3. In Visual Studio Code, in the apps-services-net7 folder, if it does not already exist, create a RestClientTests folder, and then open the folder.
4. In the RestClientTests folder, create a file named odata-catalog.http and modify its contents to contain a request to get all categories, as shown in the following code:

   GET...