* all other executions until finished.
     * We also lock on a given project to forbid a forked lifecycle to be executed concurrently with the project.
     * TODO: ideally, the builder should take care of the ordering in a smarter way
     * TODO: and concurrency issues fixed with MNG-7157
     */
    private class ProjectLock implements AutoCloseable {
        final Lock acquiredAggregatorLock;

 * all components from this class, and the upfront construction taken care of entirely by the {@link ProjectBuilder}.
 * There is still the issue of having to run the lifecycle in order to find all the compile source roots and resource
 * directories but I hope to take care of this during the Maven 4.0 release (jvz).
 * </p>
 */
public class MavenProject implements Cloneable {

  (three value logic: yes, no, don't-care). The requiresOnline
  field in the mojo descriptor has the following semantics:

  [true] Online status is required for this mojo to function
         correctly.

  [false] <<(Default)>> Either status is acceptable for the mojo to
          execute. It doesn't care.

  The majority of mojos will leave the requiresOnline == false,

 * declared in the POM.
 *
 */
public class ProjectModelResolver implements ModelResolver {

    private static final int MAX_CAP = 0x7fff;

    private final RepositorySystemSession session;

    private final RequestTrace trace;

    private final String context = "project";

    private List<RemoteRepository> repositories;

 o ~/.m2 directory does not exist
 o ~/.m2/maven.properties does not exist
 o if they once existed but now to do not exist