<img src="/img/tutorial/generate-clients/image01.png">

You can see those schemas because they were declared with the models in the app.

That information is available in the app's **OpenAPI schema**, and then shown in the API docs.

That same information from the models that is included in OpenAPI is what can be used to **generate the client code**.

### Hey API { #hey-api }

          <description>The timestamp when this version information was last updated. The timestamp is expressed using UTC in the format yyyyMMddHHmmss.</description>
          <identifier>true</identifier>
        </field>
      </fields>
    </class>

    <class java.clone="deep">
      <name>Plugin</name>
      <version>1.0.0+</version>
      <description>Mapping information for a single plugin within this group.</description>

 */
public final class NtlmUtil {

    /**
     *
     */
    private NtlmUtil() {
    }

    /**
     * Creates the NTLMv2 response for the supplied information.
     *
     * @param responseKeyNT the NT response key
     * @param serverChallenge the server challenge bytes
     * @param clientChallenge the client challenge bytes

    //                                                                      ==============

    /**
     * Retrieves system information including bug report, environment, Fess properties, and system properties.
     *
     * @return JSON response containing system information
     */
    // GET /api/admin/systeminfo
    @Execute
    public JsonResponse<ApiResult> get$index() {

import jcifs.internal.smb1.ServerMessageBlock;
import jcifs.internal.util.SMBUtil;

/**
 * SMB1 Session Setup AndX Response message.
 *
 * This response contains information about the established session,
 * including native OS, LAN manager, and primary domain information.
 */
public class SmbComSessionSetupAndXResponse extends AndXServerMessageBlock {

    private String nativeOs = "";
    private String nativeLanMan = "";

import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * Represents the FILE_BASIC_INFORMATION structure used in SMB2/3 file system control code (FSCC) operations.
 * This structure contains basic file information including creation time, last access time, last write time,
 * change time, and file attributes for querying and setting file metadata.
 */
public class FileBasicInfo implements BasicFileInformation {

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *

import jcifs.FileNotifyInformation;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;
import jcifs.util.Strings;

/**
 * File notification information
 *
 *
 * @author mbechler
 *
 */
public class FileNotifyInformationImpl implements FileNotifyInformation, Decodable {

    int nextEntryOffset;
    int action;
    int fileNameLength;

import jcifs.internal.util.SMBUtil;

/**
 * Response for SMB1 NT Transaction security descriptor query.
 *
 * This response contains the Windows security descriptor retrieved
 * from the server, including access control information.
 */
public class NtTransQuerySecurityDescResponse extends SmbComNtTransactionResponse {

    private SecurityDescriptor securityDescriptor;

    /**

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *