protected int executeCommand(final String[] commands, final String username, final String password) {
        if (commands == null || commands.length == 0) {
            throw new CommandExecutionException("command is empty.");
        }

        if (logger.isInfoEnabled()) {
            logger.info("Command: {}", String.join(" ", commands));
        }

        final String[] cmds = stream(commands).get(stream -> stream.map(s -> {

        }

        final TimeoutTask timeoutTask = createTimeoutTask();
        try {
            executePython();
        } catch (final Exception e) {
            logger.warn("Failed to run python command.", e);
            resultBuf.append(e.getMessage()).append("\n");
        } finally {
            if (timeoutTask != null && !timeoutTask.isCanceled()) {
                timeoutTask.cancel();
            }
        }

		</dependency>
		<dependency>
			<groupId>commons-codec</groupId>
			<artifactId>commons-codec</artifactId>
			<version>${commons.codec.version}</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>${commons.io.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>

     *            出力ストリーム。{@literal null}であってはいけません
     * @param comments
     *            コメント
     */
    public static void store(final Properties props, final OutputStream out, final String comments) {
        assertArgumentNotNull("props", props);
        assertArgumentNotNull("out", out);

        try {
            props.store(out, comments);
        } catch (final IOException e) {

    }

    @Override
    public void store(final OutputStream out, final String comments) throws IOException {
        getProperties().store(out, comments);
    }

    @Override
    public void store(final Writer writer, final String comments) throws IOException {
        getProperties().store(writer, comments);
    }

    @Override

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.net.URLCodec;
import org.codelibs.core.lang.StringUtil;
import org.lastaflute.web.servlet.filter.LastaPrepareFilter;

public class EncodingFilter implements Filter {

package org.codelibs.fess.api;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;

import org.apache.commons.io.output.ByteArrayOutputStream;

public class WebApiResponse extends HttpServletResponseWrapper {

    public WebApiResponse(final HttpServletResponse response) {
        super(response);
    }

    @Override

import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.io.SerializeUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.misc.Tuple3;

    $ mvn rpm:rpm   # .rpm package
    $ mvn jdeb:jdeb # .deb package

### Generate Source Code

    $ mvn dbflute:download # (one time command)
    $ mvn dbflute:freegen
    $ mvn license:format

### Integration Tests

Launch Fess Server and run the following command:

    $ mvn test -P integrationTests -Dtest.fess.url="http://localhost:8080" -Dtest.search_engine.url="http://localhost:9201"

 */
package org.codelibs.fess.util;

import static org.apache.commons.io.FileUtils.ONE_EB_BI;
import static org.apache.commons.io.FileUtils.ONE_GB_BI;
import static org.apache.commons.io.FileUtils.ONE_KB_BI;
import static org.apache.commons.io.FileUtils.ONE_MB_BI;
import static org.apache.commons.io.FileUtils.ONE_PB_BI;
import static org.apache.commons.io.FileUtils.ONE_TB_BI;

import java.math.BigDecimal;