Karate framework - Have a feature file which calls third party api. If Api is down, I need to mock response. So that my tests will pass

Question

Am trying mockservice using mock server in karate.

My Moto : I have a feature file which calls third party api. If Api is down, I need to mock response. So that my tests will pass..

What I done : I created a feature file which calls Third party api (not localhost api). Am calling this feature file from java file. In the same java file written some code to mock the response

How am running code : Running the java file as Junit

Tried some ways but not working.Any guidance would be appreciated.

callApi.feature :

Feature: To test GET by mock service

  Scenario: To test GET by mock service
    Given url 'https://abcdefg.in/api/users/1'  # ----> Fake api url to work like api is down
    When method get
    Then status 200
    * print response

SimpleMockServerTest.java -- > This is the file which calls feature file and responsible for mocking the response.

package test.java.file;

import static org.mockserver.integration.ClientAndServer.startClientAndServer;
import static org.mockserver.model.HttpRequest.request;
import static org.mockserver.model.HttpResponse.response;

import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.mockserver.client.MockServerClient;
import org.mockserver.integration.ClientAndServer;
import org.mockserver.mock.Expectation;
import org.mockserver.model.Parameter;

import com.intuit.karate.Results;
import com.intuit.karate.Runner.Builder;

public class SimpleMockServerTest {

    private static ClientAndServer mockServer;

    @BeforeAll
    public static void startMockServer() {
        mockServer = startClientAndServer(9092);
        String body = "{\r\n" + "\"id\": 7,\r\n" + "\"email\": \"michael.lawson@reqres.in\",\r\n"
                + "\"first_name\": \"Michael\",\r\n" + "\"last_name\": \"Lawson\",\r\n"
                + "\"avatar\": \"https://reqres.in/img/faces/7-image.jpg\"\r\n" + "}";
        
        Expectation[] expectations = new MockServerClient("localhost", mockServer.getLocalPort())
                .when(request("/api/users/{userId}")
                        .withPathParameter(Parameter.param("userId", "1"))
                )
                .respond(
                        response()
                                .withBody(body)
                );
        System.out.println(expectations);
    }

    @AfterAll
    public static void stopMockServer() {
       mockServer.stop();
    }   

    @Test
    public void simpleTest() {

        Builder aBuilder = new Builder();
        aBuilder.path("classpath:test/java/file/callApi.feature");
        Results result = aBuilder.parallel(1);
        Assertions.assertEquals(0, result.getFailCount());
    }

}