public static String requireNonEmpty(String value, String fieldName) {
        if (value == null) {
            throw new IllegalArgumentException(fieldName + " cannot be null");
        }
        if (value.trim().isEmpty()) {
            throw new IllegalArgumentException(fieldName + " cannot be empty");
        }
        return value;
    }

    /**
     * Validates array is not null and has expected length
     *

        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .artifactCoordinates(requireNonNull(artifactCoordinates, "artifactCoordinates cannot be null"))
                .build();
    }

    @Nonnull
    static VersionResolverRequest build(
            @Nonnull Session session,

    static ArtifactInstallerRequest build(Session session, Collection<ProducedArtifact> artifacts) {
        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .artifacts(requireNonNull(artifacts, "artifacts cannot be null"))
                .build();
    }

    @NotThreadSafe
    class ArtifactInstallerRequestBuilder {
        Session session;
        RequestTrace trace;

    }

    /**
     * Retrieve an <code>int</code>. If the key does not exist or
     * cannot be converted to an <code>int</code>, the provided default
     * argument will be returned.
     *
     * @param key the property key to look up
     * @param def the default value to return if the property is not found or cannot be parsed
     * @return the property value as an int, or the default value
     */

        if (progressedSize < 0L) {
            throw new IllegalArgumentException("progressed file size cannot be negative: " + size);
        }
        if (size >= 0 && progressedSize > size) {
            throw new IllegalArgumentException(
                    "progressed file size cannot be greater than size: " + progressedSize + " > " + size);
        }

        if (size >= 0L && progressedSize != size) {

     *             if the host cannot be resolved to find out.
     */
    boolean isActive(CIFSContext tc) throws UnknownHostException;

    /**
     * Determines if this address is set to be permanent.
     *
     * @param tc
     *            context to use
     * @return whether this address is permanent
     *
     * @throws UnknownHostException
     *             if the host cannot be resolved to find out.
     */

        Objects.requireNonNull(input, "input cannot be null");

        return read(Files.newInputStream(input.toPath()), options);
    }

    @Override
    public Metadata read(Reader input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        try (Reader in = input) {

     * host with the same IP address.
     *
     * @param addr
     *            the address to query
     * @return resolved addresses
     * @throws UnknownHostException
     *             if address cannot be resolved
     */
    NetbiosAddress[] getNbtAllByAddress(NetbiosAddress addr) throws UnknownHostException;

    /**
     * Retrieve all addresses of a host by it's address. NetBIOS hosts can

                }
            }
        }

        // ArtifactId is required and cannot be inherited
        if (artifactId == null || artifactId.isEmpty()) {
            context.debug("Cannot determine artifactId for POM");
            return null;
        }

        // GroupId and version can be inherited, but if still null, we can't create a valid Artifact

@Deprecated(since = "4.0.0")
public class DefaultSettingsReader implements SettingsReader {

    @Override
    public Settings read(File input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        try (InputStream in = Files.newInputStream(input.toPath())) {
            InputSource source = InputSource.of(input.toString());