- **Special cases**: Kurdish uses `fess_label_ckb_IQ.properties`

## Step-by-Step Guide

### 1. Create Language Resource Files

Copy the base English files as templates:

```bash
cd src/main/resources

# Copy label file (~1,056 translation entries)
cp fess_label_en.properties fess_label_[your_locale].properties

# Copy message file (~200 translation entries)

        return getPath("WEB-INF/", "orig", names);
    }

    /**
     * Gets the path to email template files directory.
     *
     * @param names the path components to append to the mail template directory
     * @return the Path object pointing to the mail template directory
     */
    public static Path getMailTemplatePath(final String... names) {
        return getPath("WEB-INF/", "mail", names);

            { "aliases", "allocation", "count", "fielddata", "health", "indices", "master", "nodeattrs", "nodes", "pending_tasks",
                    "plugins", "recovery", "repositories", "thread_pool", "shards", "segments", "snapshots", "templates" };

    // ===================================================================================
    //                                                                           Attribute
    //

    /**

/**
 * Utility class providing static functions for Fess JSP/JSTL expressions and tag libraries.
 * This class contains various helper methods for formatting, parsing, and manipulating data
 * in Fess web templates, including date formatting, localization, file operations, and
 * query parameter handling.
 *
 * @since 1.0
 */
public class FessFunctions {
    /** Logger instance for this class */

     * Puts data into the result data map after processing it through a template script.
     * The template is evaluated using the specified script engine with the value and context.
     *
     * @param dataMap the data map to modify
     * @param key the key to store the processed value under
     * @param value the original value to process
     * @param template the template script to evaluate

            }
        }
        return urlList;
    }

    /**
     * Retrieves the default crawling configuration template for a given configuration type.
     * The default template is identified by the configured form admin default template name.
     *
     * @param configType the type of configuration (WEB, FILE, or DATA)

**Strategy**: `CrawlerClient`, `Extractor`, `Transformer` - pluggable implementations
**Builder**: `RequestDataBuilder`, `ExtractorBuilder` - fluent construction
**Template Method**: `AbstractCrawlerClient`, `AbstractExtractor` - common logic with overrides
**DI**: LastaFlute container with `@Resource` and XML config

### Core Principles

**Thread Safety**:

        if (commands == null || commands.length == 0) {
            throw new CommandExecutionException("Command array is null or empty. At least one command must be provided.");
        }

        // Log command template with masked password for security
        if (logger.isDebugEnabled()) {
            final String commandStr = stream(commands).get(stream -> stream.map(s -> {
                if ("$PASSWORD".equals(s)) {

- **Builder Pattern** - `CopyOptions` for configuring bean copying operations with fluent API
- **Adapter Pattern** - Logging adapters (`JclLoggerAdapter`, `JulLoggerAdapter`) for different logging frameworks
- **Template Method** - Resource traversal utilities with customizable handlers
- **Utility Classes** - All core functionality exposed through static utility methods for easy access

### Performance Optimizations

         * @param boost The boost value.
         * @return The created query builder.
         */
        QueryBuilder buildQuery(String field, String text, float boost);
    }

    /**
     * Template method that handles the common pattern of query conversion:
     * 1. Check if field is DEFAULT_FIELD and apply default query builder
     * 2. Check if field is a search field and apply field-specific query