import java.io.File;
import java.util.Locale;
import java.util.stream.Stream;

/**
 * OS support
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public class Os {

    /**
     * The OS Name.
     */
    public static final String OS_NAME = System.getProperty("os.name").toLowerCase(Locale.ENGLISH);

    /**
     * The OA architecture.

import org.apache.maven.api.annotations.Nonnull;

/**
 * Transport for specified remote repository (using provided remote repository base URI as root). Must be treated as a
 * resource, best in try-with-resource block.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface Transport extends Closeable {
    /**
     * GETs the source URI content into target (does not have to exist, or will be overwritten if exist). The

 * Resolving is the process that selects a {@linkplain #getVersion() particular version}
 * and downloads the artifact in the local repository.  This operation returns a {@link DownloadedArtifact}.
 * </p>
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface Artifact {
    /**
     * {@return a unique identifier for this artifact}.

import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.settings.Settings;

/**
 * Builds the effective settings from a user settings file and/or an installation settings file.
 *
 * @since 4.0.0
 */
@Experimental
public interface SettingsBuilder extends Service {

    /**
     * Builds the effective settings of the specified settings files.
     *

 * <p>
 * Sources can represent:
 * <ul>
 *   <li>Local filesystem files</li>
 *   <li>In-memory content</li>
 *   <li>Database entries</li>
 *   <li>Network resources</li>
 * </ul>
 *
 * @since 4.0.0
 * @see org.apache.maven.api.services.ProjectBuilder#build(Session, Source)
 */
@Experimental
public interface Source {
    /**
     * Provides access to the file backing this source, if available.

import org.eclipse.aether.repository.ProxySelector;
import org.eclipse.aether.repository.RemoteRepository;

/**
 * Extender that fills in legacy bits (using legacy code).
 *
 * @since 4.0.0
 */
@Named
@Singleton
public class LegacyRepositorySystemSessionExtender implements RepositorySystemSessionExtender {
    @Override
    public void extend(
            MavenExecutionRequest mavenExecutionRequest,

     * <ul>
     * <li>{@code *} (since 2.0.5)= everything,</li>
     * <li>{@code external:*}  (since 2.0.9)= everything not on the localhost and not file based,</li>
     * <li>{@code external:http:*} (since 3.8.0)= any repository not on the localhost using HTTP,</li>
     * <li>{@code repo,repo1}  (since 2.0.9)= {@code repo} or {@code repo1},</li>
     * <li>{@code *,!repo1} (since 2.0.9)= everything except {@code repo1}.</li>

					return
				}
				fbr := firstByteRecorder{
					r: r,
				}
				n, err := xioutil.Copy(xioutil.Discard, &fbr)
				r.Close()
				if err == nil {
					response := time.Since(t)
					ttfb := time.Since(*fbr.t)
					// Only capture success criteria - do not
					// have to capture failed reads, truncated
					// reads etc.
					atomic.AddUint64(&totalBytesRead, uint64(n))
					mu.Lock()

                    toList(result.getArtifacts()),
                    result.getMissingArtifacts(),
                    request.getRemoteRepositories());
        }

        // this should never happen since we checked all possible error sources before but better be sure
        if (result.hasExceptions()) {
            throw new ArtifactResolutionException(

 * {@link org.apache.maven.api.services.ArtifactManager ArtifactManager} service must be used
 * to point the artifact to a {@link Path} during the packaging phase.</p>
 *
 * @since 4.0.0
 * @see Project#getMainArtifact()
 * @see Project#getPomArtifact()
 * @see org.apache.maven.api.services.ProjectManager#attachArtifact(Session, Project, Path)