import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.charset.Charset;

/**
 * A destination to which bytes can be written, such as a file. Unlike an {@link OutputStream}, a
 * {@code ByteSink} is not an open, stateful stream that can be written to and closed. Instead, it
 * is an immutable <i>supplier</i> of {@code OutputStream} instances.
 *

    private final Map<String, String> systemProperties;
    private final Path topDirectory;
    private final Path rootDirectory;

    private final InputStream in;
    private final OutputStream out;
    private final OutputStream err;
    private final List<CoreExtension> coreExtensions;

    @SuppressWarnings("ParameterNumber")
    public BaseInvokerRequest(
            @Nonnull ParserRequest parserRequest,

     * @return the output stream, or null if not set
     */
    @Nullable
    OutputStream out();

    /**
     * Returns the error stream to be used for the Maven execution.
     * If not set, System.err will be used by default.
     *
     * @return the error stream, or null if not set
     */
    @Nullable
    OutputStream err();

    /**

        Path path;
        OutputStream outputStream;
        Writer writer;
        T content;
        Function<Object, String> inputLocationFormatter;

        public XmlWriterRequestBuilder<T> path(Path path) {
            this.path = path;
            return this;
        }

        public XmlWriterRequestBuilder<T> outputStream(OutputStream outputStream) {
            this.outputStream = outputStream;

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

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.function.Function;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.es.client.SearchEngineClient;

        Path path = request.getPath();
        OutputStream outputStream = request.getOutputStream();
        Writer writer = request.getWriter();
        if (writer == null && outputStream == null && path == null) {
            throw new IllegalArgumentException("writer, outputStream or path must be non null");
        }
        try {
            if (writer != null) {

        write(XmlWriterRequest.<T>builder().content(content).path(path).build());
    }

    default void write(@Nonnull T content, @Nonnull OutputStream outputStream) throws XmlWriterException {
        write(XmlWriterRequest.<T>builder()
                .content(content)
                .outputStream(outputStream)
                .build());
    }

    default void write(@Nonnull T content, @Nonnull Writer writer) throws XmlWriterException {

        CloseableUtil.close((OutputStream) null);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testClose_noThrowIOException() throws Exception {
        final OutputStream out = new IOExceptionOccurOutputStream();
        CloseableUtil.close(out);
    }

    private static class NotifyOutputStream extends OutputStream {
        private String notify_;

        @Override

        outProperties.setProperty("a", "A");
        final File file = tempFolder.newFile("hoge.properties");
        final FileOutputStream outputStream = OutputStreamUtil.create(file);
        PropertiesUtil.store(outProperties, outputStream, "comments");
        CloseableUtil.close(outputStream);
        final Properties properties = new Properties();
        PropertiesUtil.load(properties, file);

        this(null, null);
    }

    public ProtoLogger(@Nullable OutputStream out, @Nullable OutputStream err) {
        this.out = new PrintWriter(toPsOrDef(out, System.out), true);
        this.err = new PrintWriter(toPsOrDef(err, System.err), true);
    }

    private PrintStream toPsOrDef(OutputStream outputStream, PrintStream def) {
        if (outputStream == null) {
            return def;
        }