}

        public String getGroupId() {
            return nullify(metadata.getGroupId());
        }

        public String getArtifactId() {
            return nullify(metadata.getArtifactId());
        }

        public String getBaseVersion() {
            return nullify(metadata.getVersion());
        }

        private String nullify(String str) {

        buildContext.getResult().addException(t);
        buildContext.getResult().addBuildSummary(new BuildFailure(mavenProject, buildEndTime - buildStartTime, t));

        // notify listeners about "soft" project build failures only
        if (t instanceof Exception && !(t instanceof RuntimeException)) {
            eventCatapult.fire(ExecutionEvent.Type.ProjectFailed, currentSession, null, (Exception) t);

                logger.warn(
                        "Fix reported issues by adjusting plugin configuration or by upgrading above listed plugins. If no upgrade available, please notify plugin maintainers about reported issues.");
            }
            logger.warn(
                    "For more or less details, use 'maven.plugin.validation' property with one of the values (case insensitive): {}",

 * of the public API. In particular, this class can be changed or deleted without prior notice.
 *
 */
public class RepositoryUtils {

    private static String nullify(String string) {
        return (string == null || string.isEmpty()) ? null : string;
    }

    private static org.apache.maven.artifact.Artifact toArtifact(Dependency dependency) {
        if (dependency == null) {