if (a.size() != b.size()) {
            return false;
        }

        Iterator<Dependency> aI = a.iterator();
        Iterator<Dependency> bI = b.iterator();

        while (aI.hasNext()) {
            Dependency aD = aI.next();
            Dependency bD = bI.next();

            boolean r = Objects.equals(aD.getGroupId(), bD.getGroupId()) //

 * </ul>
 *
 * @see DefaultDependencyResolver#resolve(DependencyResolverRequest)
 */
class DefaultDependencyResolverResult implements DependencyResolverResult {
    /**
     * The exceptions that occurred while building the dependency graph.
     */
    private final List<Exception> exceptions;

    /**
     * The root node of the dependency graph.
     */
    private final Node root;

    /**

## resolve links - $0 may be a link to Maven's home
PRG="$0"

# need this for relative symlinks
while [ -h "$PRG" ] ; do
  ls=`ls -ld "$PRG"`
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '/.*' > /dev/null; then
    PRG="$link"
  else
    PRG="`dirname "$PRG"`/$link"
  fi
done

saveddir=`pwd`

MAVEN_HOME=`dirname "$PRG"`/..

# make it fully qualified
MAVEN_HOME=`cd "$MAVEN_HOME" && pwd`

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.repository.metadata;

/**
 * Error while retrieving repository metadata from the repository.
 *
 */
@Deprecated
public class RepositoryMetadataResolutionException extends Exception {
    public RepositoryMetadataResolutionException(String message) {

-->

<project>
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>org.apache.maven.its.mng</groupId>
    <artifactId>parent</artifactId>
    <version>0.1</version>
  </parent>

  <!-- while groupId and version are inherited, artifactId is not and must be specified -->

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.metadata;

/**
 * Error while retrieving repository metadata from the repository.
 *
 */
@Deprecated
public class MetadataRetrievalException extends Exception {

    private ArtifactMetadata artifact;

        // based on ModeBuildingResult.validationLevel
        BASE,
        V20,
        V30,
        V31,
        V40
    }

    /**
     * Gets the identifier of the model from which the problem originated. While the general form of this identifier is
     * <code>groupId:artifactId:version</code> the returned identifier need not be complete. The identifier is derived

        // we want to see all top-level thread groups
        ThreadGroup tg = Thread.currentThread().getThreadGroup();
        while (tg.getParent() == null) {
            tg = tg.getParent();
        }

        ThreadGroup[] tgList = new ThreadGroup[tg.activeGroupCount()];
        tg.enumerate(tgList);

        boolean seen = false;

import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.version.PluginVersionResolutionException;

/**
 * Processes events from the model builder while building the effective model for a {@link MavenProject} instance.
 *
 */
public class DefaultModelBuildingListener implements ModelBuildingListener {

    private final MavenProject project;

            cur.getExecutions().forEach(e -> execs.put(e.getId(), e));
            plugin.getExecutions().forEach(e -> {
                int i = 0;
                String id = e.getId();
                while (execs.putIfAbsent(id, e.withId(id)) != null) {
                    id = e.getId() + "-" + (++i);
                }
            });
            Plugin merged = cur.withExecutions(execs.values());