return (d.getScope() == null || d.getScope().isEmpty()) ? d.withScope("compile") : d;
    }

    /**
     * Returns a list suited for the builders, i.e. null if not modified
     */
    private <T> List<T> injectList(List<T> list, Function<T, T> modifer) {
        List<T> newList = null;
        for (int i = 0; i < list.size(); i++) {

import org.apache.maven.lifecycle.internal.ProjectBuildList;
import org.apache.maven.lifecycle.internal.ProjectSegment;
import org.apache.maven.project.MavenProject;

/**
 * <p>
 * Presents a view of the Dependency Graph that is suited for concurrent building.
 * </p>
 * <strong>NOTE:</strong> This class is not part of any public api and can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
public class ConcurrencyDependencyGraph {