String extension,
            String classifier,
            boolean includesDependencies,
            PathType... pathTypes) {
        this.id = requireNonNull(id, "id");
        this.language = requireNonNull(language, "language");
        this.extension = requireNonNull(extension, "extension");
        this.classifier = classifier;
        this.includesDependencies = includesDependencies;

@ElementTypesAreNonnullByDefault
final class Platform {
  private Platform() {}

  /** Returns a thread-local 1024-char array. */
  static char[] charBufferFromThreadLocal() {
    // requireNonNull accommodates Android's @RecentlyNullable annotation on ThreadLocal.get
    return requireNonNull(DEST_TL.get());
  }

  /**
   * A thread-local destination buffer to keep us from creating new buffers. The starting size is

        this.classifier = classifier;
        this.extension = requireNonNull(extension);
        this.packaging = requireNonNull(packaging);
    }

    @Override
    public String getClassifier() {
        return classifier;
    }

    @Override
    public String getDirectory() {
        return null;
    }

    @Override
    public String getExtension() {

@Singleton
@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 = new InputSource(input.toString());

        requireNonNull(parserRequest);

        LocalContext context = new LocalContext(parserRequest);

        // the basics
        context.cwd = requireNonNull(getCwd(context));
        context.installationDirectory = requireNonNull(getInstallationDirectory(context));
        context.userHomeDirectory = requireNonNull(getUserHomeDirectory(context));

        // top/root

import java.io.Serializable;

import static java.util.Objects.requireNonNull;

public abstract class BaseObject implements Serializable, Cloneable {
    protected transient ChildrenTracking childrenTracking;

    protected Object delegate;

    public BaseObject() {}

    public BaseObject(Object delegate, BaseObject parent) {
        this.delegate = requireNonNull(delegate, "delegate cannot be null");

            super(id);
            this.projectScope = Objects.requireNonNull(projectScope);
            this.dependencyScopes =
                    Collections.unmodifiableSet(new HashSet<>(Arrays.asList(Objects.requireNonNull(dependencyScopes))));
        }

        @Override
        public ProjectScope projectScope() {
            return projectScope;
        }

    @Inject
    MavenInstaller(DefaultInstaller installer, ConsumerPomArtifactTransformer consumerPomArtifactTransformer) {
        this.installer = requireNonNull(installer);
        this.consumerPomArtifactTransformer = requireNonNull(consumerPomArtifactTransformer);
    }

    @Override
    public InstallResult install(RepositorySystemSession session, InstallRequest request) throws InstallationException {

        public ProtoLookup build() {
            return new ProtoLookup(components);
        }

        public <T> Builder addMapping(Class<T> type, T component) {
            requireNonNull(type, "type");
            requireNonNull(component, "component");
            if (components.put(type, component) != null) {
                throw new IllegalStateException("Duplicate mapping for type: " + type.getName());
            }

        Objects.requireNonNull(file, "file cannot be null");
        return read(file.toPath(), options);
    }

    @Override
    public org.apache.maven.model.Model read(Path path, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(path, "path cannot be null");