title: Swagger/OpenAPI mock server
body: <p>I have an API reference in a Swagger file. I want to create a very simple mock server, so that when I call e.g.:</p>
  
  <p><code>mymockurl.com/users</code> it will return a predefined JSON (no need to connect to a database).</p>
  
  <p>What's the easiest way to do this? I'm not a backend guy.</p>