In diesem Fall möchten Sie möglicherweise dokumentieren, wie diese externe API aussehen *sollte*. Welche *Pfadoperation* sie haben sollte, welchen Body sie erwarten sollte, welche Response sie zurückgeben sollte, usw.

## Eine Anwendung mit Callbacks

Sehen wir uns das alles anhand eines Beispiels an.

Stellen Sie sich vor, Sie entwickeln eine Anwendung, mit der Sie Rechnungen erstellen können.

import jcifs.internal.smb1.ServerMessageBlock;

/**
 * Response for SMB1 COM_SET_INFORMATION command.
 *
 * This response indicates the success or failure of setting file
 * attributes and last write time.
 *
 * @author mbechler
 */
public class SmbComSetInformationResponse extends ServerMessageBlock {

    /**
     * Constructs a set information response.
     *
     * @param config the configuration to use
     */

import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Flush response message.
 *
 * This response confirms that buffered data has been
 * successfully flushed to the storage device.
 *
 * @author mbechler
 */
public class Smb2FlushResponse extends ServerMessageBlock2Response {

    /**
     * Constructs an SMB2 flush response
     * @param config the client configuration
     */

    Note over client,tasks: Can raise exception for dependency, handled after response is sent
    Note over client,operation: Can raise HTTPException and can change the response
    client ->> dep: Start request
    Note over dep: Run code up to yield
    opt raise
        dep -->> handler: Raise HTTPException
        handler -->> client: HTTP error response
        dep -->> dep: Raise other exception
    end

response.max.title.length=50
# Maximum length of site path in the response.
response.max.site.path.length=100
# Whether to enable content title highlighting in the response.
response.highlight.content_title.enabled=true
# Inline MIME types for the response.
response.inline.mimetypes=application/pdf,text/plain
# HTTP headers for the response.
response.headers=\
text/html=X-XSS-Protection: 1; mode=block\n\

import org.codelibs.fess.unit.UnitFessTestCase;
import org.dbflute.optional.OptionalEntity;
import org.lastaflute.web.login.credential.LoginCredential;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.JsonResponse;

import java.util.HashMap;
import java.util.Map;
import java.util.function.Function;

public class SsoAuthenticatorTest extends UnitFessTestCase {

    Request request = new Request.Builder()
        .url(url)
        .build();
    Call call = httpClient.newCall(request);
    try (Response response = call.execute()) {
      JsonAdapter<OAuthSession> jsonAdapter = moshi.adapter(OAuthSession.class);
      return jsonAdapter.fromJson(response.body().source());
    }
  }

  /** See https://api.slack.com/methods/rtm.start. */

import jcifs.internal.TreeConnectResponse;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Connect response message.
 *
 * This response contains information about the connected
 * tree, including share type and capabilities.
 *
 * @author mbechler
 */

                    throws java.io.IOException, ServletException {

                if (!isMultipartRequest(request) || !request.getMethod().equals(HttpMethods.POST)) {
                    response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
                    response.getWriter().println(HttpServletResponse.SC_BAD_REQUEST);

     * @param request The HTTP servlet request.
     * @param response The HTTP servlet response.
     * @param chain The filter chain.
     * @throws IOException If an input/output error occurs.
     * @throws ServletException If a servlet error occurs.
     */
    void process(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException;