* used by plugins.
     *
     * @return The project's class realm or {@code null}.
     */
    public ClassRealm getClassRealm() {
        return classRealm;
    }

    /**
     * Sets the artifact filter used to exclude shared extension artifacts from plugin realms. <strong>Warning:</strong>

        </field>
        <field xdoc.separator="blank">
          <name>properties</name>
          <version>4.0.0+</version>
          <description>
            Properties that can be used throughout the POM as a substitution, and
            are used as filters in resources if enabled.
            The format is {@code &lt;name>value&lt;/name>}.
          </description>
          <type>Properties</type>

        return lifeCyclePluginAnalyzer.getPluginsBoundByDefaultToAllLifecycles(packaging);
    }

    // USED BY MAVEN HELP PLUGIN

    @Deprecated
    public Map<String, Lifecycle> getPhaseToLifecycleMap() {
        return defaultLifeCycles.getPhaseToLifecycleMap();
    }

    // Used by m2eclipse

    @SuppressWarnings({"UnusedDeclaration"})

            result.add(executionPlanItem.getMojoExecution());
        }
        return result;
    }

    /**
     * Get set of plugins having a goal/mojo used but not marked @threadSafe
     *
     * @return the set of plugins (without info on which goal is concerned)
     */
    public Set<Plugin> getNonThreadSafePlugins() {
        Set<Plugin> plugins = new HashSet<>();

            // not used
        }

        public void merge(ArtifactMetadata metadata) {
            // not used
        }

        public void storeInLocalRepository(ArtifactRepository localRepository, ArtifactRepository remoteRepository)
                throws RepositoryMetadataStoreException {
            // not used
        }

        public String extendedToString() {

/**
 * Cache of {@link PathModularization} instances computed for given {@link Path} elements.
 * The cache is used for avoiding the need to reopen the same files many times when the
 * same dependency is used for different scope. For example a path used for compilation
 * is typically also used for tests.
 */
class PathModularizationCache {
    /**
     * Module information for each JAR file or output directories.

        this.packages = Collections.unmodifiableSet(new HashSet<>(packages));
        this.key = key;
        this.configuration = configuration;
    }

    /**
     * Returns ClassLoader used to load extension classes.
     */
    public ClassRealm getClassRealm() {
        return realm;
    }

    /**
     * Returns artifacts exported by the extension, identified by groupId:artifactId string key.

    /**
     * Returns immutable user properties to use for interpolation. The user properties have been configured directly
     * by the user, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @return the user properties, never {@code null}
     */
    @Nonnull
    Map<String, String> getUserProperties();

    /**

     * the bean class will be used.
     *
     * @return The class loader to load referenced types from or {@code null} if unset.
     */
    ClassLoader getClassLoader();

    /**
     * Sets the class loader from which to load any types referenced by the configuration. If unset, the class loader of
     * the bean class will be used.
     *

     * In a package hierarchy, the {@linkplain #descriptors} map has either zero or one entry.
     * In a module hierarchy, the descriptors map may have an arbitrary number of entries,
     * including one (so the map size cannot be used as a criterion).
     *
     * @see #isModuleHierarchy()
     */
    private final boolean isModuleHierarchy;

    /**
     * Constructs an empty instance for non-modular dependencies.
     *
     * @see #NONE