FindAUser.java

public class FindAUser implements Task{
    private final int id;

    public FindAUser(int id) {
        this.id = id;
    }

    public static FindAUser withId(int id) {
        return instrumented(FindAUser.class, id);
    }

    @Override
    @Step("{0} fetches the user with id #id")
    public <T extends Actor> void performAs(T actor) {
        actor.attemptsTo(
                Get.resource("/users/{id}")
                   .with(request -> request.pathParam("id", id))
        );
    }
}