The preview url service in the studio server can be obtained simply by referencing it by its' interface. Let's say, we want to implement a new REST service and want to use the preview url service. The basic approach using plain spring boot would be:

  @RestController
  public class CustomRestController {
    private final PreviewUrlService previewUrlService;
    public CustomRestController(PreviewUrlService previewUrlService) {
      this.previewUrlService = previewUrlService;
    }
    ...
  }