}

    @Override
    public String toString() {
        return getGroupId() + ":" + getArtifactId() + ":" + getVersion() + ":"
                + (getClassifier() == null ? "" : getClassifier()) + ":"
                + (getType() == null ? DEFAULT_TYPE : getType());
    }

     *
     * @param projectDirectory The (possibly non-existent) base directory to locate the POM file in, must not be {@code
     *            null}.
     * @return The path to the (possibly non-existent) POM file, never {@code null}.
     */
    File locatePom(File projectDirectory);

                            "anyOf": [{"type": "string"}, {"type": "null"}],
                            "title": "Description",
                        },
                        "price": {"type": "number", "title": "Price"},
                        "tax": {
                            "anyOf": [{"type": "number"}, {"type": "null"}],
                            "title": "Tax",
                        },

@Deprecated
public class TestRepositorySystem implements RepositorySystem {

    private final ModelReader modelReader;

    private final ArtifactFactory artifactFactory;

    public TestRepositorySystem() {
        this(null, null);
    }

    @Inject
    public TestRepositorySystem(ModelReader modelReader, ArtifactFactory artifactFactory) {
        this.modelReader = modelReader;
        this.artifactFactory = artifactFactory;
    }

        if (fromRepo) {
            // when model is read from repo, a stream is used, then pomFile == null
            // (has consequences in inheritance algorithm since getProjectDirectory() returns null)
            parent = parent.clone();
            parent.setPomFile(null);
            child = child.clone();
            child.setPomFile(null);
        }

        SimpleProblemCollector problems = new SimpleProblemCollector();

        this.target = target;
        this.session = session;
        this.sourcePathProvider = sourcePathProvider;
        this.sourceState = new AtomicReference<>(null);
    }

    @Override
    public boolean isResolved() {
        return getFile() != null;
    }

    @Override
    public void setFile(File file) {
        throw new UnsupportedOperationException("transformed artifact file cannot be set");
    }

//
// Any NULL and non-NULL value combinations for (`run_options`,
// `run_metadata`) are valid.
//
//    - `run_options` may be NULL, in which case it will be ignored; or
//      non-NULL, in which case it must point to a `TF_Buffer` containing the
//      serialized representation of a `RunOptions` protocol buffer.
//    - `run_metadata` may be NULL, in which case it will be ignored; or

            eventCatapult.fire(ExecutionEvent.Type.SessionEnded, session, null);
        }
    }

    public List<TaskSegment> calculateTaskSegments(MavenSession session) throws Exception {

        MavenProject rootProject = session.getTopLevelProject();

        List<String> tasks = requireNonNull(session.getGoals()); // session never returns null, but empty list

        if (tasks.isEmpty()

     *
     * @return the exceptions that occurred, never {@code null}
     */
    @Nonnull
    List<Exception> getExceptions();

    /**
     * Gets the root node of the dependency graph.
     *
     * @return the root node of the dependency graph or {@code null} if none
     */
    @Nullable
    Node getRoot();

    /**

     */
    String getProjectId();

    /**
     * Gets the POM file from which the project was built.
     *
     * @return The POM file or {@code null} if unknown.
     */
    File getPomFile();

    /**
     * Gets the project that was built.
     *
     * @return The project that was built or {@code null} if an error occurred and this result accompanies a