}
        }

        /*
         * NOTE: This is primarily to keep backward-compat with Maven 2.x which did not validate that dependencies are
         * unique within a single POM. Upon multiple declarations, 2.x just kept the last one but retained the order of
         * the first occurrence. So when we're in lenient/compat mode, we have to deal with such broken POMs and mimic

                .collect(Collectors.toList());
    }

    private Map<String, Lifecycle> lookupLifecycles() {
        // TODO: Remove the following code when maven-compat is gone
        // This code is here to ensure maven-compat's EmptyLifecycleExecutor keeps on working.
        if (lookup == null) {
            return customLifecycles != null ? customLifecycles : new HashMap<>();
        }

~~ specific language governing permissions and limitations
~~ under the License.

 -----
 Introduction
 -----
 Hervé Boutemy
 -----
 2016-05-29
 -----

Maven Compat

 Maven2 classes maintained as compatibility layer for plugins that need to keep Maven2 compatibility.

 Plugins should avoid these classes and be updated to use only Maven3 dependencies (and require Maven3): see

    <T> void set(@Nonnull Key<T> key, @Nullable T value);

    /**
     * Associates the specified session data with the given key if the key is currently mapped to the given value. This
     * method provides an atomic compare-and-update of some key's value.
     *
     * @param key the key under which to store the session data, must not be {@code null}
     * @param oldValue the expected data currently associated with the key, may be {@code null}

  <parent>
    <groupId>org.apache.maven</groupId>
    <artifactId>maven</artifactId>
    <version>4.0.0-beta-1-SNAPSHOT</version>
  </parent>

  <artifactId>maven-compat</artifactId>

  <name>Maven Compat (deprecated)</name>
  <description>Deprecated Maven2 classes maintained as compatibility layer.</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>

import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.plugin.LegacySupport;
import org.apache.maven.project.ProjectBuilder;

/**
 * This realizes the metadata source via the default hint to provide backward-compat with Maven 2.x whose Plexus version
 * registered component descriptors twice: once keyed by role+roleHint and once keyed by role only. This effectively

        assertEquals(p.getRepositories().size(), clone.getRepositories().size());
        // TODO deep compare the lists
        assertEquals(
                p.getPluginRepositories().size(), clone.getPluginRepositories().size());
        // TODO deep compare the lists
    }

            //                        new Comparator<MetadataGraphEdge>()
            //                        {
            //                            public int compare( MetadataGraphEdge e1
            //                                              , MetadataGraphEdge e2
            //                                              )
            //                            {

    <maven.site.path>ref/4-LATEST/${project.artifactId}</maven.site.path>
  </properties>

  <dependencyManagement>
    <!-- Not included:
         - apache-maven, as it delivers the binaries
         - maven-compat, only used by apache-maven distributions to support older releases
         - maven-slf4j-provider, only used by apache-maven distributions
         - maven-wrapper, only used by apache-maven-wrapper distributions -->

apply to your use of any object code in the Content.  Check the Redistributor's license that was
provided with the Content.  If no such license exists, contact the Redistributor.  Unless otherwise
indicated below, the terms and conditions of the EPL still apply to any source code in the Content