/**
     * Parses a robots.txt file from the given input stream using UTF-8 encoding.
     * @param stream the input stream to parse
     * @return the parsed RobotsTxt object, or null if disabled
     */
    public RobotsTxt parse(final InputStream stream) {
        return parse(stream, Constants.UTF_8);
    }

    /**
     * Parses a robots.txt file from the given input stream using the specified character encoding.
     *

        this.processDestroyTimeout = processDestroyTimeout;
    }

    /**
     * Sets the timeout for stream closing operations.
     *
     * @param streamCloseTimeout timeout in seconds for stream closing operations
     */
    public void setStreamCloseTimeout(final int streamCloseTimeout) {
        this.streamCloseTimeout = streamCloseTimeout;
    }

    /**

        stream(crawlingConfig.getPermissions()).of(stream -> stream.forEach(p -> roleTypeList.add(p)));
        putResultDataBody(dataMap, fessConfig.getIndexFieldRole(), roleTypeList);
        // virtualHosts
        putResultDataBody(dataMap, fessConfig.getIndexFieldVirtualHost(),
                stream(crawlingConfig.getVirtualHosts()).get(stream -> stream.filter(StringUtil::isNotBlank).collect(Collectors.toList())));

 */
package org.codelibs.fess.app.web.api.admin.labeltype;

import static org.codelibs.core.stream.StreamUtil.stream;
import static org.codelibs.fess.app.web.admin.labeltype.AdminLabeltypeAction.getLabelType;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import static org.codelibs.core.stream.StreamUtil.split;
import static org.codelibs.core.stream.StreamUtil.stream;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.InetAddress;

     * Gets all configured virtual host paths.
     *
     * @return An array of virtual host paths
     */
    public String[] getVirtualHostPaths() {
        return stream(ComponentUtil.getFessConfig().getVirtualHosts())
                .get(stream -> stream.map(h -> "/" + h.getValue3()).toArray(n -> new String[n]));
    }

                }
            }

            final DuplicateHostHelper duplicateHostHelper = ComponentUtil.getDuplicateHostHelper();

            // set urls
            split(urlsStr, "[\r\n]").of(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).distinct().forEach(urlValue -> {
                if (!urlValue.startsWith("#") && protocolHelper.isValidWebProtocol(urlValue)) {

    /**
     * Creates a {@link Reader} to read from a file with the specified encoding.
     *
     * @param is
     *            the input stream (must not be {@literal null})
     * @param encoding
     *            the encoding of the input stream (must not be {@literal null} or empty)
     * @return a {@link Reader} to read from the file
     */

- ✅ Failed extraction includes descriptive error messages
- ✅ Null input stream validation
- ✅ Error messages include file type context

---

### 2. FilenameExtractorEnhancedTest.java
**Purpose**: Test FilenameExtractor edge cases and new documentation.

**Key Test Areas**:
- Parameter handling (null, empty, missing)
- Special character handling
- Input stream validation (not consumption)
- Edge cases (long filenames, paths, whitespace)

 */
package org.codelibs.fess.app.web.api.admin.accesstoken;

import static org.codelibs.core.stream.StreamUtil.stream;
import static org.codelibs.fess.app.web.admin.accesstoken.AdminAccesstokenAction.getAccessToken;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;