builder.field("test", "value");
            builder.endObject();
            return builder;
        };

        OutputStream outputStream = SearchEngineUtil.getXContentBuilderOutputStream(callback, XContentType.JSON);
        assertNotNull(outputStream);
        assertTrue(outputStream instanceof ByteArrayOutputStream);
    }

    public void test_getXContentBuilderOutputStream_ioException() {

     * Wraps the output stream with a {@link BufferedOutputStream} if necessary.
     *
     * @param os the output stream
     * @return the wrapped output stream
     */
    protected static OutputStream wrap(final OutputStream os) {
        if (os instanceof BufferedOutputStream) {
            return os;
        }
        if (os instanceof ByteArrayOutputStream) {
            return os;
        }

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;

    @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

   *
   * <p>Note that the given byte array may be passed directly to methods on, for example, {@code
   * OutputStream} (when {@code copyTo(OutputStream)} is called on the resulting {@code
   * ByteSource}). This could allow a malicious {@code OutputStream} implementation to modify the
   * contents of the array, but provides better performance in the normal case.
   *

import com.google.errorprone.annotations.Keep;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.Serializable;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;

        }
      };

  /**
   * Returns an {@link OutputStream} that simply discards written bytes.
   *
   * <p><b>Java 11+ users:</b> use {@link OutputStream#nullOutputStream()} instead. Note that the
   * {@link ByteStreams} method returns a singleton stream whose {@code close} method has no effect,
   * while the {@link OutputStream} method returns a new instance whose {@code write} methods throw

import com.google.common.reflect.TypeToken;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.math.BigDecimal;

import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import com.google.common.io.BaseEncoding.DecodingException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;