* The dependencies collection mechanism will not download any artifacts,
 * and only the pom files will be downloaded.
 *
 * @since 4.0.0
 */
@Experimental
public interface DependencyCollector extends Service {

    /**
     * Collects the transitive dependencies and builds a dependency graph.
     * Note that this operation is only concerned about determining the coordinates of the

     * in which case there is one key per sub-directory.
     *
     * <p>This map may contain null values if the constructor was invoked with {@code resolve}
     * parameter set to false. This is more efficient when only the module existence needs to
     * be tested, and module descriptors are not needed.</p>
     *
     * @see #getModuleNames()
     */
    private final Map<Path, String> descriptors;

    /**

     * what phases have run dependencies in some scopes won't be included. e.g. if only compile phase has run,
     * dependencies with scope test won't be included.
     *
     * @return {@link Set} < {@link Artifact} >
     * @see #getDependencyArtifacts() to get only direct dependencies
     */
    public Set<Artifact> getArtifacts() {
        if (artifacts == null) {

     * @return The POM whose build plugins are to be scanned for the prefix or {@code null} to only search the plugin
     *         repositories.
     */
    Model getPom();

    /**
     * Sets the POM whose build plugins are to be scanned for the prefix.
     *
     * @param pom The POM whose build plugins are to be scanned for the prefix, may be {@code null} to only search the
     *            plugin repositories.

        checkBuildPluginWithArtifactId(
                activeProfilePlugins,
                "only-active-profile",
                "Active only ||${project.basedir}||",
                "<plugin-in-active-profile-only>Active only ||${project.basedir}||</plugin-in-active-profile-only>");

        // =============================================

        }
    }

    /**
     * Returns {@code true} if passed in artifact is originating from local repository. In other words, we want
     * to process and store tracking information ONLY into local repository, not to any other place. This method
     * filters out currently built artifacts, as events are fired for them as well, but their resolved artifact

 *
 */
@Deprecated
public interface GraphConflictResolver {
    String ROLE = GraphConflictResolver.class.getName();

    /**
     * Cleanses the supplied graph by leaving only one directed versioned edge\
     * between any two nodes, if multiple exists. Uses scope relationships, defined
     * in <code>ArtifactScopeEnum</code>
     *

     */
    @Nonnull
    PersistedToolchains getEffectiveToolchains();

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link ToolchainsBuilderException}.
     *

                return packagedArtifactFile;
            }
        }

        if (!hasBeenPackagedDuringThisSession(project)) {
            // fallback to loose class files only if artifacts haven't been packaged yet
            // and only for plain old jars. Not war files, not ear files, not anything else.
            return determineBuildOutputDirectoryForArtifact(project, artifact);
        }

import org.eclipse.aether.RepositorySystemSession;

/**
 * Helps to provide backward-compatibility with plugins that use legacy components. <strong>Warning:</strong> This is an
 * internal utility component that is only public for technical reasons, it is not part of the public API. In
 * particular, this component can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
@Named
@Singleton