如何在JUnit 5中使用@RestTemplateClient？

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.cloud.openfeign.support.SpringMvcContract;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import static org.junit.jupiter.api.Assertions.assertEquals;

@ExtendWith(SpringExtension.class)
@SpringBootTest
public class RestTemplateClientTest {

    @Autowired
    private TestClient testClient;

    @Test
    public void testRestTemplateClient() {
        String result = testClient.getData();
        assertEquals("Hello, World!", result);
    }

    @RestController
    @RequestMapping("/api")
    @EnableFeignClients(clients = TestClient.class)
    public static class TestController {

        @GetMapping("/data")
        public String getData() {
            return "Hello, World!";
        }
    }

    @FeignClient(name = "testClient", url = "http://localhost:${local.server.port}", configuration = SpringMvcContract.class)
    public interface TestClient {

        @GetMapping("/api/data")
        String getData();
    }
}