/**
     * Returns the current maven version
     * @return the maven version, never {@code null}
     */
    @Nonnull
    Version getMavenVersion();

    int getDegreeOfConcurrency();

    @Nonnull
    Instant getStartTime();

    /**
     * Gets the directory of the topmost project being built, usually the current directory or the

    private static final int MAX_INTITEM_LENGTH = 9;

    private static final int MAX_LONGITEM_LENGTH = 18;

    private String value;

    private String canonical;

    private ListItem items;

    private interface Item {
        int INT_ITEM = 3;
        int LONG_ITEM = 4;
        int BIGINTEGER_ITEM = 0;
        int STRING_ITEM = 1;
        int LIST_ITEM = 2;
        int COMBINATION_ITEM = 5;

        remoteRepositories.add(remoteRepository());

        return remoteRepositories;
    }

    // ----------------------------------------------------------------------
    // Test artifact generation for unit tests
    // ----------------------------------------------------------------------

    protected Artifact createLocalArtifact(String artifactId, String version) throws Exception {

 * declared in the POM.
 *
 */
public class ProjectModelResolver implements ModelResolver {

    private static final int MAX_CAP = 0x7fff;

    private final RepositorySystemSession session;

    private final RequestTrace trace;

    private final String context = "project";

    private List<RemoteRepository> repositories;

            return result;
        }

        @Override
        public Version getMavenVersion() {
            return null;
        }

        @Override
        public int getDegreeOfConcurrency() {
            return 0;
        }

        @Override
        public Instant getStartTime() {
            return startTime;
        }

        @Override

    @Inject
    private PlexusContainer container;

    @Inject
    private LegacySupport legacySupport;

    private final Executor executor;

    public DefaultArtifactResolver() {
        int threads = Integer.getInteger("maven.artifact.threads", 5);
        if (threads <= 1) {
            executor = Runnable::run;
        } else {
            executor = new ThreadPoolExecutor(

     */
    int VALIDATION_LEVEL_MAVEN_3_0 = 30;

    /**
     * Denotes validation as performed by Maven 3.1. This validation level is meant for existing projects.
     */
    int VALIDATION_LEVEL_MAVEN_3_1 = 31;

    /**
     * Denotes validation as performed by Maven 4.0. This validation level is meant for new projects.
     */
    int VALIDATION_LEVEL_MAVEN_4_0 = 40;

    /**

        ArtifactVersion upperBound = null;
        ArtifactVersion lowerBound = null;

        while (process.startsWith("[") || process.startsWith("(")) {
            int index1 = process.indexOf(')');
            int index2 = process.indexOf(']');

            int index = index2;
            if (index2 < 0 || index1 < index2) {
                if (index1 >= 0) {
                    index = index1;
                }
            }

        return versionRangeViolations != null;
    }

    /**
     * TODO this needs to accept a {@link OverConstrainedVersionException} as returned by
     *       {@link #getVersionRangeViolation(int)} but it's not used like that in
     *       DefaultLegacyArtifactCollector
     *
     * @param e an exception
     * @return {@code this}
     */

                    decoded = decoded.substring(0, pos) + ch + decoded.substring(pos + 3);
                }
            }
        }
        return decoded;
    }

    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((getId() == null) ? 0 : getId().hashCode());
        return result;
    }

    public boolean equals(Object obj) {