or(paths::getProperty, prefix("cli.", commandLine::getOptionValue), systemProperties::getProperty);

        Path mavenConf;
        if (systemProperties.getProperty(MAVEN_INSTALLATION_CONF) != null) {
            mavenConf = fileSystem.getPath(systemProperties.getProperty(MAVEN_INSTALLATION_CONF));
        } else if (systemProperties.getProperty("maven.conf") != null) {

        final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(annotation.annotationType());
        for (final String name : beanDesc.getMethodNames()) {
            final Object v = getProperty(beanDesc, annotation, name);
            if (v != null) {
                map.put(name, v);
            }
        }
        return map;
    }

    /**
     * Returns the value of an annotation element.

import org.jspecify.annotations.Nullable;

/**
 * Represents a {@linkplain System#getProperties() standard system property}.
 *
 * @author Kurt Alfred Kluever
 * @since 15.0
 */
@GwtIncompatible // java.lang.System#getProperty
public enum StandardSystemProperty {

  /** Java Runtime Environment version. */
  JAVA_VERSION("java.version"),

  /** Java Runtime Environment vendor. */
  JAVA_VENDOR("java.vendor"),

import org.jspecify.annotations.Nullable;

/**
 * Represents a {@linkplain System#getProperties() standard system property}.
 *
 * @author Kurt Alfred Kluever
 * @since 15.0
 */
@GwtIncompatible // java.lang.System#getProperty
public enum StandardSystemProperty {

  /** Java Runtime Environment version. */
  JAVA_VERSION("java.version"),

  /** Java Runtime Environment vendor. */
  JAVA_VENDOR("java.vendor"),

        return profile.getActivation() != null && profile.getActivation().getProperty() != null;
    }

    @Override
    public boolean isActive(Profile profile) throws ProfileActivationException {
        Activation activation = profile.getActivation();

        ActivationProperty property = activation.getProperty();

        if (property != null) {
            String name = property.getName();

        }

        if (localRepositoryPath == null || localRepositoryPath.isEmpty()) {
            String path = request.getUserProperties().getProperty(Constants.MAVEN_USER_CONF);
            if (path == null) {
                path = request.getSystemProperties().getProperty("user.home") + File.separator + ".m2";
            }
            localRepositoryPath = new File(path, "repository").getAbsolutePath();
        }

                if (node.getArtifact().getProperties().containsKey(ArtifactProperties.TYPE)) {
                    currentType = registry.get(node.getArtifact()
                            .getProperty(
                                    ArtifactProperties.TYPE, node.getArtifact().getExtension()));
                    if (currentType == null) {
                        currentType = jar;
                    }

    @Override
    public boolean traverseDependency(Dependency dependency) {
        requireNonNull(dependency, "dependency cannot be null");
        String prop = dependency.getArtifact().getProperty(MavenArtifactProperties.INCLUDES_DEPENDENCIES, "");
        return !Boolean.parseBoolean(prop);
    }

    @Override
    public DependencyTraverser deriveChildTraverser(DependencyCollectionContext context) {

@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
final class ClassPathUtil {
  private ClassPathUtil() {}

  /**
   * Returns the URLs in the class path specified by the {@code java.class.path} {@linkplain
   * System#getProperty system property}.
   */
  // TODO(b/65488446): Make this a public API.
  static URL[] parseJavaClassPath() {
    ImmutableList.Builder<URL> urls = ImmutableList.builder();

        Interpolator interpolator = new DefaultInterpolator();
        UnaryOperator<String> callback = v -> {
            String r = request.getUserProperties().getProperty(v);
            if (r == null) {
                r = request.getSystemProperties().getProperty(v);
            }
            return r != null ? r : v;
        };
        return v -> interpolator.interpolate(v, callback);
    }