* This class handles the authentication, connection management, and data retrieval
     * from S3 buckets and objects.
     *
     * <p>
     * The connection extracts bucket and object names from the URL and uses environment
     * variables for authentication and endpoint configuration.
     * </p>
     */
    public class S3URLConnection extends URLConnection {

As code duplication increments the chances of bugs, security issues, code desynchronization issues (when you update in one place but not in the others), etc.

And these models are all sharing a lot of the data and duplicating attribute names and types.

We could do better.

We can declare a `UserBase` model that serves as a base for our other models. And then we can make subclasses of that model that inherit its attributes (type declarations, validation, etc).

<img src="/img/tutorial/generate-clients/image06.png">

В этом случае у вас есть:

* `ItemsService`
* `UsersService`

### Имена методов клиента { #client-method-names }

Сейчас сгенерированные имена методов вроде `createItemItemsPost` выглядят не очень аккуратно:

```TypeScript
ItemsService.createItemItemsPost({name: "Plumbus", price: 5})
```

  if (TF_GetCode(status) != TF_OK) return nullptr;

  // Process output names.
  std::vector<string> output_names_vec;
  if (output_names) {
    output_names_vec.reserve(noutputs);
    for (int i = 0; i < noutputs; ++i) {
      output_names_vec.push_back(string(output_names[i]));
    }
  }

  // Process control output names.
  std::vector<string> control_output_names_vec;
  if (control_output_names) {

import org.codelibs.fess.util.ComponentUtil;

/**
 * Fess-specific crawler configuration that extends OpenSearchCrawlerConfig.
 * This class provides configuration settings for the Fess crawler including
 * index names, shard counts, and replica counts for queue, data, and filter indices.
 */
public class FessCrawlerConfig extends OpenSearchCrawlerConfig {

    /**
     * Default constructor.
     */
    public FessCrawlerConfig() {

type createBucketLocationConfiguration struct {
	XMLName  xml.Name `xml:"CreateBucketConfiguration" json:"-"`
	Location string   `xml:"LocationConstraint"`
}

// DeleteObjectsRequest - xml carrying the object key names which needs to be deleted.
type DeleteObjectsRequest struct {
	// Element to enable quiet mode for the request
	Quiet bool
	// List of objects to be deleted
	Objects []ObjectToDelete `xml:"Object"`

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package event

// RulesMap - map of rules for every event name.
type RulesMap map[Name]Rules

// add - adds event names, prefixes, suffixes and target ID to rules map.
func (rulesMap RulesMap) add(eventNames []Name, pattern string, targetID TargetID) {
	rules := make(Rules)
	rules.Add(pattern, targetID)

	for _, eventName := range eventNames {

//
// We use this program instead of 'zip -0 -r ../../zoneinfo.zip *' to get
// a reproducible generator that does not depend on which version of the
// external zip tool is used or the ordering of file names in a directory
// or the current time.
package main

import (
	"archive/zip"
	"bytes"
	"flag"
	"fmt"
	"hash/crc32"
	"io/fs"
	"log"
	"os"
	"path/filepath"
	"strings"
)

  // 'main'. Work around this by creating a 'main' source set that forwards to 'jvmMain'.
  //
  // The forwarding SourceSet also needs to fake out some task names to prevent them from being
  // registered twice.
  //
  // https://github.com/bndtools/bnd/issues/6590
  val jvmMainSourceSet = sourceSets.getByName("jvmMain")
  val mainSourceSet =

# Algorithm for digest calculation.
app.digest.algorism=sha256
# Regex pattern for properties to encrypt.
app.encrypt.property.pattern=.*password|.*key|.*token|.*secret

# Extension names for application customization.
app.extension.names=

# Audit log format.
app.audit.log.format=

# JVM options for the crawler process.
jvm.crawler.options=\
-Djava.awt.headless=true\n\
-Dfile.encoding=UTF-8\n\
-Djna.nosys=true\n\