}

    /**
     * Aggregating mojo executions (possibly) modify all MavenProjects, including those that are currently in use
     * by concurrently running mojo executions. To prevent race conditions, an aggregating execution will block
     * all other executions until finished.
     * We also lock on a given project to forbid a forked lifecycle to be executed concurrently with the project.

/**
 * The session to install / deploy / resolve artifacts and dependencies.
 *
 * TODO: move the remote repositories in the requests (plugins will need to access this list somehow)
 * TODO: add request trace so that requests can be linked together and through the resolver
 * TODO: add a Request interface holding session + parent request
 *
 * @since 4.0.0
 */
@Experimental
@ThreadSafe
public interface Session {

 */
public interface MessageBuilder extends Appendable {

    /**
     * Append message content in trace style.
     * By default, bold magenta
     *
     * @param message the message to append
     * @return the current builder
     */
    @Nonnull
    default MessageBuilder trace(Object message) {
        return style(".trace:-bold,f:magenta", message);
    }

    /**
     * Append message content in debug style.

            RequestTrace trace,
            RepositorySystem resolver,
            RemoteRepositoryManager remoteRepositoryManager,
            List<RemoteRepository> repositories,
            ProjectBuildingRequest.RepositoryMerging repositoryMerging,
            ReactorModelPool modelPool,
            Map<String, Object> parentCache) {
        this.session = session;
        this.trace = trace;
        this.resolver = resolver;

            ModelBuilderRequest.ModelBuilderRequestBuilder modelBuildingRequest = ModelBuilderRequest.builder();

            RequestTrace trace = RequestTrace.newChild(null, request).newChild(modelBuildingRequest);

            ModelResolver resolver = new ModelResolverWrapper() {
                @Override

PROPERTY_XMLDECL_CONTENT = http://xmlpull.org/v1/doc/properties.html#xmldecl-content; protected static final String PROPERTY_LOCATION = http://xmlpull.org/v1/doc/properties.html#location; protected boolean allStringsInterned; private static final boolean TRACE_SIZING = 0; protected boolean processNamespaces; protected boolean roundtripSupported; protected String location; protected int lineNumber; protected int columnNumber; protected boolean seenRoot; protected boolean reachedEnd; protected int eventType;...

        if (repositoryUrl.contains("${")) {
            // the repository url contains unresolved properties and getting the basedir is not possible
            // in JDK 20+ 'new URL(string)' will fail if the string contains a curly brace
            this.basedir = null;
        } else {
            try {
                URL url = new URL(repository.getUrl());
                if ("file".equals(url.getProtocol())) {

            RepositorySystemSession session,
            RequestTrace trace,
            Metadata metadata,
            ArtifactRepository repository,
            Exception exception) {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.METADATA_INVALID);
        event.setTrace(trace);
        event.setMetadata(metadata);
        event.setException(exception);

                request.addDependency(pluginDep);
            }

            DependencyRequest depRequest = new DependencyRequest(request, resolutionFilter);
            depRequest.setTrace(trace);

            request.setTrace(RequestTrace.newChild(trace, depRequest));

            node = repoSystem.collectDependencies(pluginSession, request).getRoot();

            if (logger.isDebugEnabled()) {

void info(Object, Throwable); public boolean isDebugEnabled(); public boolean isErrorEnabled(); public boolean isFatalEnabled(); public boolean isInfoEnabled(); public boolean isTraceEnabled(); public boolean isWarnEnabled(); public void trace(Object); public void trace(Object, Throwable); public void warn(Object); public void warn(Object, Throwable); } org/apache/commons/logging/impl/Log4JCategoryLog.class package org.apache.commons.logging.impl; public final synchronized class Log4JCategoryLog implements...