Rewriting ScenarioDesigner method

In my old citrus version code I have below method:-

@Scenario("Example")
@RequestMapping(value = "/sim/example", method = RequestMethod.GET)
public class GetCircuit extends AbstractSimulatorScenario {

@Override
public void run(ScenarioDesigner scenario) {

scenario.http().receive().get();
scenario.http().send().response(HttpStatus.OK).header("ContentType", "application/json")
.payload(new ClassPathResource("datamanager/example.json"));

}

}

In newer version how can I write the same code as ScenarioDesigner class no longer exist?

The issue only provides an older Java example using ScenarioDesigner, @Scenario, @RequestMapping, and AbstractSimulatorScenario; it names no current file or test. Start by locating the newer Citrus simulator scenario API and its HTTP examples. Done means documenting and verifying the equivalent configuration for the shown GET endpoint and JSON response.

Written by the indexing model from the issue text.