/**
 * 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 {

            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;...

            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()) {

        } catch (Exception e) {
            invalidMetadata(session, trace, metadata, repository, e);
            result.addException(e);
        }

        return (versioning != null) ? versioning : Versioning.newInstance();
    }

    private void invalidMetadata(
            RepositorySystemSession session,
            RequestTrace trace,
            Metadata metadata,
            ArtifactRepository repository,

        return result;
    }

    private void missingDescriptor(
            RepositorySystemSession session, RequestTrace trace, Artifact artifact, Exception exception) {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.ARTIFACT_DESCRIPTOR_MISSING);
        event.setTrace(trace);
        event.setArtifact(artifact);
        event.setException(exception);

            }
        }

        DependencyRequest depRequest = new DependencyRequest(collect, filter);
        depRequest.setTrace(trace);

        DependencyNode node;
        try {
            collect.setTrace(RequestTrace.newChild(trace, depRequest));
            node = repoSystem.collectDependencies(session, collect).getRoot();
            result.setDependencyGraph(node);

     * from the information that is available at the point the problem occurs and as such merely serves as a best effort
     * to provide information to the user to track the problem back to its origin.
     *
     * @return The identifier of the model from which the problem originated or an empty string if unknown, never
     *         {@code null}.
     */
    String getModelId();