├── concurrent/                 # Async patterns (Deferred/Promise)
└── util/                      # Utilities
```

### Key Design Patterns

- **Builder**: SuggesterBuilder, SuggestRequestBuilder
- **Facade**: Suggester (main entry point)
- **Composite**: NormalizerChain, ReadingConverterChain
- **Strategy**: Normalizer, ReadingConverter, ContentsParser
- **Deferred/Promise**: Async operations

### Index Alias Strategy

```java
import org.codelibs.curl.Curl;

Curl.post("https://api.example.com/items")
    .body("{\"name\":\"item1\"}")
    .header("Content-Type", "application/json")
    .execute(
        response -> System.out.println("Async status: " + response.getHttpStatusCode()),
        error -> error.printStackTrace());
```

## API Overview

- `org.codelibs.curl.Curl`: entry point for HTTP methods (GET, POST, PUT, DELETE, HEAD, OPTIONS, CONNECT, TRACE).

import org.codelibs.fess.util.RenderDataUtil;
import org.codelibs.fess.util.ResourceUtil;
import org.codelibs.fess.util.SearchEngineUtil;
import org.dbflute.bhv.readable.EntityRowHandler;
import org.lastaflute.core.magic.async.AsyncManager;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.StreamResponse;

2. **Factory Pattern**: `Curl` class provides static factory methods for each HTTP method
3. **Resource Management**: `CurlResponse` implements `Closeable` for try-with-resources
4. **Async Support**: Both synchronous (`executeSync()`) and asynchronous (`execute()`) execution modes

## Technical Details

- **Java Version**: 17+
- **Dependencies**:
  - Apache Commons IO 2.19.0 (runtime)

            assertEquals('a', stream.read());
            assertEquals(-1, stream.read()); // EOF
        }

        // File should be deleted after close
        // Note: FileUtil.deleteInBackground() is async, so we can't reliably test this
    }

    public void test_available() throws Exception {
        // Create a temporary file with test data
        File tempFile = File.createTempFile("test-", ".tmp");

```javascript
<!-- Old GSS/CSE Code -->
<script>
  (function() {
    var cx = 'YOUR-CSE-ID';
    var gcse = document.createElement('script');
    gcse.type = 'text/javascript';
    gcse.async = true;
    gcse.src = 'https://cse.google.com/cse.js?cx=' + cx;
    var s = document.getElementsByTagName('script')[0];
    s.parentNode.insertBefore(gcse, s);
  })();
</script>
<gcse:search></gcse:search>
```

            logger.debug("[scheduleParentGroupLookup] Scheduling async parent group lookup for user: {}, groupIds count: {}",
                    user.getName(), groupIds.size());
        }
        TimeoutManager.getInstance().addTimeoutTarget(() -> {
            if (logger.isDebugEnabled()) {
                logger.debug("[scheduleParentGroupLookup] Async task started for user: {}", user.getName());
            }

import org.codelibs.fess.exception.StorageException;

import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
import software.amazon.awssdk.core.sync.RequestBody;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.S3ClientBuilder;

                                        name="reloadDocIndex"
                                        value="<la:message key="labels.reload_doc_index_button"/>">
                                    <i class="fa fa-sync" aria-hidden="true"></i>
                                    <la:message key="labels.reload_doc_index_button"/>
                                </button>
                            </div>
                        </div>

# Base DN for LDAP admin group.
ldap.admin.group.base.dn=ou\=Group,dc\=fess,dc\=codelibs,dc\=org
# Object classes for LDAP admin group.
ldap.admin.group.object.classes=groupOfNames
# Whether to sync password for LDAP admin.
ldap.admin.sync.password=true

# Whether to validate LDAP authentication.
ldap.auth.validation=true
# Maximum username length for LDAP.
ldap.max.username.length=-1