/**
     * Gets the session data associated with the specified key.
     *
     * @param key the key for which to retrieve the session data, must not be {@code null}
     * @return the session data associated with the key or {@code null} if none
     */
    @Nullable
    <T> T get(@Nonnull Key<T> key);

    /**
     * Retrieve of compute the data associated with the specified key.
     *

@Experimental
public interface ArtifactManager extends Service {

    /**
     * Returns the path of the file previously associated to this artifact
     * or {@code Optional.empty()} if no path has been associated.
     */
    @Nonnull
    Optional<Path> getPath(@Nonnull Artifact artifact);

    /**
     * Associates the given file path to the artifact.
     */
    void setPath(@Nonnull Artifact artifact, Path path);

    }

    static void associate(org.eclipse.aether.RepositorySystemSession rsession, Session session) {
        if (!rsession.getData().set(InternalSession.class, null, from(session))) {
            throw new IllegalStateException("A maven session is already associated with the repository session");
        }
    }

    /**
     * Shortcut for {@code getService(ArtifactManager.class).setPath(...)}.
     *
     * @param artifact the artifact for which to associate a path
     * @param path path to associate to the given artifact
     *
     * @see org.apache.maven.api.services.ArtifactManager#setPath(Artifact, Path)
     */
    void setArtifactPath(@Nonnull Artifact artifact, @Nonnull Path path);

%{toc|fromDepth=2}

* <<<default>>> Lifecycle

  <<<default>>> lifecycle is defined only with phases, <<without>> any associated plugin binding:
  plugins bindings for this lifecycle are {{{./default-bindings.html}defined separately for each packaging}}:

/**
 * A dependency's {@code Type} is uniquely identified by a {@code String},
 * and semantically represents a known <i>kind</i> of dependency.
 * <p>
 * It provides information about the file type (or extension) of the associated artifact,
 * its default classifier, and how the artifact will be used in the build when creating
 * class-paths or module-paths.
 * <p>
 * For example, the type {@code java-source} has a {@code jar} extension and a

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

/**
 * Filter to only retain objects in the given scope or better. This implementation allows the accumulation of multiple
 * scopes and their associated implied scopes, so that the user can filter apply a series of implication rules in a
 * single step. This should be a more efficient implementation of multiple standard {@link ScopeArtifactFilter}
 * instances ORed together.
 *

 * formed by a combination of group id, artifact id, version and tag. The first three components generally refer to the
 * identity of a model. The tag allows for further classification of the associated data on the sole discretion of the
 * model builder.
 *
 */
public interface ModelCache {

    <T> T computeIfAbsent(String groupId, String artifactId, String version, String tag, Supplier<T> data);

    /**
     * Proxy server host
     */
    private String host;

    /**
     * Username used to access the proxy server
     */
    private String userName;

    /**
     * Password associated with the proxy server
     */
    private String password;

    /**
     * Proxy server port
     */
    private int port;

    /**
     * Type of the proxy
     */
    private String protocol;

            for (PluginExecution execution : plugin.getExecutions()) {
                // if the phase is specified then I don't have to go fetch the plugin yet and pull it down
                // to examine the phase it is associated to.
                if (execution.getPhase() != null) {
                    Map<Integer, List<MojoExecution>> phaseBindings = mappings.get(execution.getPhase());
                    if (phaseBindings != null) {