Wouldn't it be a good idea if we can pass a Func while creating the Responses, this way when the response is being creating, the func will be invoked which then will decide the response
For example

server
  .Given(
    Requests.WithUrl("/api").UsingGet()
  )
  .RespondWith(
    Responses
      .WithStatusCode(200)
      .WithResponseFunc((request) => new Response())
  ); 

In the lambda, we can decide what response to send.
Thoughts?
Kay