}

    }

    /**
     * Sets the encoding for the output.
     * @param outputEncoding The output encoding to set.
     */
    public void setOutputEncoding(final String outputEncoding) {
        this.outputEncoding = outputEncoding;
    }

    /**
     * Sets the output file extension.
     * @param outputExtension The output file extension to set.
     */

    /** Temporary directory for file operations. */
    protected File tempDir = null;

    /** Output encoding for extracted text. */
    protected String outputEncoding = Constants.UTF_8;

    /** Map of input file extensions to output extensions. */
    private final Map<String, String> extensionMap = new HashMap<>();

    /** Map of output extensions to their corresponding extractors. */

            return mimeTypeHelper.getContentType(is, filename);
        }
    }

    /**
     * Gets an input stream for the content in the deferred file output stream.
     *
     * @param out the deferred file output stream
     * @return the input stream for the content
     * @throws IOException if an I/O error occurs
     */

        return parseContext;
    }

    /**
     * Returns an input stream from a deferred file output stream.
     *
     * @param dfos A deferred file output stream.
     * @return An input stream.
     * @throws IOException if an I/O error occurs.
     */

 * to parse the HTML content, evaluate XPath expressions, and generate the XML output.
 * </p>
 * <p>
 * The class supports various XPath result types, including BOOLEAN, NUMBER, STRING, NODESET, and NODE.
 * It also provides options to trim whitespace from extracted values and to specify the character encoding for the output.
 * </p>
 * <p>

 * </p>
 *
 * <p>
 * The class also utilizes ICU4J's {@link com.ibm.icu.text.Transliterator} to convert full-width characters
 * to half-width and to convert any characters to lowercase, ensuring consistency in the output.
 * </p>
 *
 * <p>
 * Example:
 * For the input "キャ", the converter might return a list containing "kya".
 * For the input "ジュ", the converter might return a list containing "zyu", "ju", and "jyu".
 * </p>
 *

The project uses JUnit 4 with embedded OpenSearch for integration testing:

```bash
# Run all tests
mvn test

# Run specific test class
mvn test -Dtest=SuggesterTest

# Run with verbose output
mvn surefire:test -Dmaven.surefire.debug=true
```

### Running Tests with Coverage

```bash
mvn clean jacoco:prepare-agent test jacoco:report
```

import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.regex.Pattern;

import javax.net.ssl.SSLContext;

import org.apache.commons.io.output.DeferredFileOutputStream;
import org.apache.commons.lang3.SystemUtils;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;