* @throws NullPointerException if passed in name is {@code null}.
     */
    @Nonnull
    ChecksumAlgorithm select(@Nonnull String algorithmName);

    /**
     * Returns a collection of {@link ChecksumAlgorithm} in same order as algorithm names are ordered, or throws if
     * any of the algorithm name is not supported. The returned collection has equal count of elements as passed in

     * {@link #build(ModelBuildingRequest)} with {@link ModelBuildingRequest#isTwoPhaseBuilding()} being {@code true}.
     * The model building request passed to this method must be the same as the one used for the first phase of the
     * model building.
     *
     * @param request The model building request that holds the parameters, must not be {@code null}.

        assertEquals("PASSED", pom.getValue(prefix + "propertiesFile"));
        assertEquals("PASSED", pom.getValue(prefix + "parent"));
        assertEquals("PASSED-1", pom.getValue(prefix + "stringParams/stringParam[1]"));
        assertEquals("PASSED-3", pom.getValue(prefix + "stringParams/stringParam[2]"));
        assertEquals("PASSED-2", pom.getValue(prefix + "stringParams/stringParam[3]"));

                    new DefaultArtifact(artifact.getGroupId(), artifact.getArtifactId(), "pom", artifact.getVersion());
        }

        return pomArtifact;
    }

    /**
     * Creates POM artifact out of passed in artifact by dropping classifier (if exists) and rewriting extension to
     * "pom". Unconditionally, unlike {@link #toPomArtifact(Artifact)} that does this only for artifacts without
     * classifiers.
     *

    private final TransferListener delegate;
    private final int batchMaxSize;
    private final boolean blockOnLastEvent;
    private final ArrayBlockingQueue<Exchange> eventQueue;

    /**
     * Constructor that makes passed in delegate run on single thread, and will block on last event.
     */
    public SimplexTransferListener(TransferListener delegate) {
        this(delegate, QUEUE_SIZE, BATCH_MAX_SIZE, true);
    }

    /**

                    new DefaultArtifact(artifact.getGroupId(), artifact.getArtifactId(), "pom", artifact.getVersion());
        }

        return pomArtifact;
    }

    /**
     * Creates POM artifact out of passed in artifact by dropping classifier (if exists) and rewriting extension to
     * "pom". Unconditionally, unlike {@link #toPomArtifact(Artifact)} that does this only for artifacts without
     * classifiers.
     *

     */
    void validateRawModel(Model model, ModelBuildingRequest request, ModelProblemCollector problems);

    /**
     * Checks the specified (raw) model for clashes with the passed active external profiles. The raw model is the
     * file model + buildpom filter transformation and has not been subjected to inheritance, interpolation or profile/default injection.
     *

         * repository never uses timestamps in the filename of a snapshot artifact. The discrepancy gets notable when a
         * remotely resolved snapshot artifact gets passed into pathOf(). So producing a proper local artifact path
         * using DefaultRepositoryLayout requires us to enforce usage of the artifact's base version. This

    private ThreadLocal<MavenProject> currentProject = new ThreadLocal<>();

    /**
     * These projects have already been topologically sorted in the {@link org.apache.maven.Maven} component before
     * being passed into the session. This is also the potentially constrained set of projects by using --projects
     * on the command line.
     */
    private List<MavenProject> projects;

    /**

  should result in similar modification. This object is not meant to be
  static within the build process, but rather to be setup as an aggregation of
  all settings-related information passed into the system.

** Control over downloads

  Find the control point for m2 using maven-wagon. At this point, inject
  a offline status parameter which is used when retrieving the specific Wagon.