Read more about it in the [FastAPI docs about Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).

## Example

```python
from fastapi import FastAPI, status

app = FastAPI()


@app.get("/items/", status_code=status.HTTP_418_IM_A_TEAPOT)

import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.login.LoginManager;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.next.HtmlNext;
import org.lastaflute.web.ruts.process.ActionRuntime;

import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;

import org.lastaflute.web.UrlChain;
import org.lastaflute.web.login.credential.LoginCredential;
import org.lastaflute.web.login.exception.LoginFailureException;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;

/**
 * SSO (Single Sign-On) action controller.
 *
 * This action handles SSO authentication flows including login, logout, and metadata

 */
package jcifs.internal.smb2.nego;

import jcifs.Decodable;

/**
 * SMB2 Negotiate Context response data structure.
 *
 * This class represents negotiate contexts returned by the server
 * in response to negotiate context requests.
 *
 * @author mbechler
 */
public interface NegotiateContextResponse extends Decodable {

    /**

```txt
Hello, World from Flask!
```

Und wenn Sie auf <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> gehen, sehen Sie die Response von FastAPI:

```JSON
{
    "message": "Hello World"
}

    }, 1, TimeUnit.SECONDS);

    System.out.printf("%.2f Executing call.%n", (System.nanoTime() - startNanos) / 1e9f);
    try (Response response = call.execute()) {
      System.out.printf("%.2f Call was expected to fail, but completed: %s%n",
          (System.nanoTime() - startNanos) / 1e9f, response);
    } catch (IOException e) {
      System.out.printf("%.2f Call failed as expected: %s%n",

    @Test
    @DisplayName("getResponse should return the same response instance")
    void testGetResponse() {
        // Verify getResponse returns the exact same instance
        SmbNegotiationResponse response = negotiation.getResponse();
        assertSame(mockResponse, response);

        // Verify multiple calls return the same instance
        assertSame(response, negotiation.getResponse());
    }

    @Test

import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.opensearch.user.exentity.Role;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin role management.
 */
public class ApiAdminRoleAction extends FessApiAdminAction {

    /** The logger for this class. */

          close-issue-reason: completed
          # List of labels to remove when issues/PRs unstale. 
          labels-to-remove-when-unstale: 'stat:awaiting response'
          only-labels: "stat:awaiting response"
          stale-issue-message: > 
            This issue is stale because it has been open for 7 days with no activity.
            It will be closed if no further activity occurs. Thank you.

    server!!.enqueue(MockResponse(body = "abc"))
    ProxySelector.setDefault(null)
    val client = clientTestRule.newClient()
    val request = Request(server!!.url("/"))
    val response = client.newCall(request).execute()
    assertThat(response.body.string()).isEqualTo("abc")
  }

  @Test fun sslSocketFactorySetAsSocketFactory() {
    val builder = OkHttpClient.Builder()
    assertFailsWith<IllegalArgumentException> {