* is thrown so this information is merely meant to assist the user.
     *
     * @return The identifier of the project or an empty string if not known, never {@code null}.
     */
    String getProjectId();

    /**
     * Gets the POM file from which the project was built.
     *
     * @return The POM file or {@code null} if unknown.
     */
    File getPomFile();

     * @param session The repository session, must not be {@code null}.
     * @param artifactCoordinate The artifact coordinate for which the version needs to be resolved, must not be {@code null}
     * @return The version result, never {@code null}.
     * @throws VersionResolverException If the metaversion could not be resolved.
     */
    @Nonnull

     *            null}.
     * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
     * @return The resolved plugin artifact, never {@code null}.
     * @throws PluginResolutionException If the plugin artifact could not be resolved.
     */
    Artifact resolve(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session)

 */
@Experimental
public interface DependencyCollectorResult {
    /**
     * Gets the exceptions that occurred while building the dependency graph.
     *
     * @return the exceptions that occurred, never {@code null}
     */
    @Nonnull
    List<Exception> getExceptions();

    /**
     * Gets the root node of the dependency graph.
     *
     * @return the root node of the dependency graph or {@code null} if none

    /**
     * Creates a human-friendly string representation of the specified object.
     *
     * @param obj The object to create a string representation for, may be <code>null</code>.
     * @return The string representation, never <code>null</code>.
     */
    private String toString(Object obj) {
        String str;
        if (obj != null && obj.getClass().isArray()) {
            int n = Array.getLength(obj);

     *
     * @return the version
     */
    @Nonnull
    Version getBaseVersion();

    /**
     * The classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     */
    @Nonnull
    String getClassifier();

    /**
     * The file extension of the artifact.
     *
     * @return the extension
     */
    @Nonnull
    String getExtension();

    /**
     * @return dependency for this node
     */
    @Nullable
    Dependency getDependency();

    /**
     * Gets the child nodes of this node.
     *
     * @return the child nodes of this node, never {@code null}
     */
    @Nonnull
    List<Node> getChildren();

    /**
     * @return repositories of this node
     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    /**

        MavenProject rootProject = session.getTopLevelProject();

        List<String> tasks = requireNonNull(session.getGoals()); // session never returns null, but empty list

        if (tasks.isEmpty()
                && (rootProject.getDefaultGoal() != null
                        && !rootProject.getDefaultGoal().isEmpty())) {

ASM: a very small and fast Java bytecode manipulation framework
Copyright (c) 2000-2011 INRIA, France Telecom
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.

     */
    @Nonnull
    List<String> getModelIds();

    /**
     * Gets the file model.
     *
     * @return the file model, never {@code null}.
     */
    @Nonnull
    Model getFileModel();

    /**
     * Returns the file model + profile injection.
     *
     * @return the activated file model, never {@code null}.
     */
    @Nonnull