}

            if (event.getArtifact() != null) {
                trackingData.add(indent + event.getArtifact());
                indent += "  ";
            }
            trackingData.add(indent + plugin.getGroupId() + ":" + plugin.getArtifactId() + ":" + plugin.getVersion());
            indent += "  ";

            InputLocation location = plugin.getLocation("");

        indent = indent.substring(2);
    }

    public void includeArtifact(Artifact artifact) {
        logger.debug(indent + artifact + " (selected for " + artifact.getScope() + ")");
    }

    public void omitForNearer(Artifact omitted, Artifact kept) {
        String omittedVersion = omitted.getVersion();
        String keptVersion = kept.getVersion();

        if (!Objects.equals(omittedVersion, keptVersion)) {

import java.util.ArrayList;
import java.util.List;

/**
 * MetadataGraph node - as it's a directed graph - holds adjacency lists for incident and exident nodes
 *
 *
 */
@Deprecated
public class MetadataGraphNode {
    /** node payload */
    MavenArtifactMetadata metadata;

    /** nodes, incident to this (depend on me) */
    List<MetadataGraphNode> inNodes;

    /** nodes, exident to this (I depend on) */

                        }
                    }
                } catch (Exception e) {
                    // here we can have: IO. ZIP or Plexus Conf Ex: but we should not interfere with user intent
                }
            }
        }
        return null;
    }

    /**
     * the entry point we started building the graph from
     */
    MetadataGraphVertex entry;

    // graph vertices
    TreeSet<MetadataGraphVertex> vertices;

    /**
     * incident and excident edges per node
     */
    Map<MetadataGraphVertex, List<MetadataGraphEdge>> incidentEdges;

    Map<MetadataGraphVertex, List<MetadataGraphEdge>> excidentEdges;

    /**

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Target({FIELD, CONSTRUCTOR, METHOD})
@Retention(RUNTIME)
@Documented

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.metadata;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.ArrayList;
import java.util.List;
import java.util.TreeSet;

import org.apache.maven.artifact.ArtifactScopeEnum;

/**