public void execute(MavenSession session) {
        lifecycleStarter.execute(session);
    }

    // These methods deal with construction intact Plugin object that look like they come from a standard
    // <plugin/> block in a Maven POM. We have to do some wiggling to pull the sources of information
    // together and this really shows the problem of constructing a sensible default configuration but

        return () -> {
            LinkedList<ScopeState> stack = values.get();
            if (stack == null || stack.isEmpty()) {
                throw new OutOfScopeException("Cannot access " + key + " outside of a scoping block");
            }

            ScopeState state = stack.getFirst();

            Provider<?> seeded = state.seeded.get(key);

            if (seeded != null) {
                return (T) seeded.get();

        if (metadataFile.length() == 0) {
            if (!metadataFile.delete()) {
                // sleep for 10ms just in case this is windows holding a file lock
                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    // ignore
                }

        this.defaultLifeCycles = requireNonNull(defaultLifeCycles);
    }

    // These methods deal with construction intact Plugin object that look like they come from a standard
    // <plugin/> block in a Maven POM. We have to do some wiggling to pull the sources of information
    // together and this really shows the problem of constructing a sensible default configuration but

        values.add(0, new ScopeState());
    }

    protected ScopeState getScopeState() {
        if (values.isEmpty()) {
            throw new OutOfScopeException("Cannot access session scope outside of a scoping block");
        }
        return values.get(0);
    }

    public void exit() {
        if (values.isEmpty()) {
            throw new IllegalStateException();
        }
        values.remove(0);
    }

- plugin in any default values
- check to see if anything is missing

    @Deprecated
    void setBlacklisted(boolean blackListed);

    /**
     * @return whether the repository is blocked
     * @since 3.8.1
     **/
    boolean isBlocked();

    /**
     * @param blocked block the repository?
     * @since 3.8.1
     **/
    void setBlocked(boolean blocked);

    //
    // New interface methods for the repository system.
    //
    /**
     *
     * @param artifact an artifact

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