entry.setValue(entry.getValue() + "x");
        }
        Object o21 = properties.get(KEY1);
        assertEquals(VALUE1 + "x", o21);

        baos = new ByteArrayOutputStream();
        properties.save(baos);

        properties = new MavenProperties();
        properties.load(new ByteArrayInputStream(baos.toByteArray()));
        Object o2 = properties.get(KEY1);

    }

    public static Properties getBuildProperties() {
        Properties properties = new Properties();

        try (InputStream resourceAsStream =
                MavenCli.class.getResourceAsStream("/org/apache/maven/messages/build.properties")) {

            if (resourceAsStream != null) {
                properties.load(resourceAsStream);
            }

        then:
        formatTree(result) == '''<chapter>
    <section>
        <title>Properties</title>
        <section>
            <title>Properties added by the <literal>thingo</literal> plugin</title>
            <titleabbrev><literal>thingo</literal> plugin</titleabbrev>
            <table>
                <title>Properties - <literal>thingo</literal> plugin</title>
                <thead>
                    <tr>

          "unit": "none"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "S3 Errors"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "light-red",
                  "mode": "fixed"
                }
              }

import java.util.Properties;

import org.junit.jupiter.api.Test;

import jcifs.CIFSException;

/**
 * Unit tests for Multi-Channel configuration properties
 */
class MultiChannelConfigurationTest {

    @Test
    void testDefaultMultiChannelSettings() throws CIFSException {
        PropertyConfiguration config = new PropertyConfiguration(new Properties());

            daemonized="yes"
            shift
        ;;
        -h)
            usage
            exit 0
        ;;
        -D)
            properties="$properties -D$2"
            shift 2
        ;;
        -X)
            properties="$properties -X$2"
            shift 2
        ;;
        --)
            shift
            break
        ;;
        *)

        MavenProperties properties;
        if (props instanceof MavenProperties mavenProperties) {
            properties = mavenProperties;
        } else {
            properties = new MavenProperties();
            properties.putAll(props);
        }
        return update(properties);
    }

    public boolean update(MavenProperties properties) {
        boolean modified = false;

        MavenProperties properties;
        if (props instanceof MavenProperties mavenProperties) {
            properties = mavenProperties;
        } else {
            properties = new MavenProperties();
            properties.putAll(props);
        }
        return update(properties);
    }

    public boolean update(MavenProperties properties) {
        boolean modified = false;

        }

        return this;
    }

    @Override
    public Properties getSystemProperties() {
        if (systemProperties == null) {
            systemProperties = new Properties();
        }

        return systemProperties;
    }

    @Override
    public DefaultModelBuildingRequest setSystemProperties(Properties systemProperties) {
        if (systemProperties != null) {

import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.Properties;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.net.URLUtil;

/**
 * Utility class for {@link Properties} operations.
 *
 * @author higa
 */
public abstract class PropertiesUtil {

    /**
     * Do not instantiate.
     */