Path rootDirectory = findRoot(basedir);
        if (rootDirectory == null) {
            throw new IllegalStateException(getNoRootMessage());
        }
        return rootDirectory;
    }

    @Nullable
    default Path findRoot(Path basedir) {
        Path rootDirectory = basedir;
        while (rootDirectory != null && !isRootDirectory(rootDirectory)) {
            rootDirectory = rootDirectory.getParent();

        return this;
    }

    @Override
    public Model getSuperModel(String version) {
        if (superModel == null) {
            String resource = "/org/apache/maven/model/pom-" + version + ".xml";

            InputStream is = getClass().getResourceAsStream(resource);

            if (is == null) {
                throw new IllegalStateException("The super POM " + resource + " was not found"

     * cache.
     *
     * @param project The project that employs the plugin realm, must not be {@code null}.
     * @param record The cache record being used for the project, must not be {@code null}.
     */
    void register(MavenProject project, Key key, CacheRecord record);

     * @param stringFormatter
     */
    public void setStringFormatter(InputLocation.StringFormatter stringFormatter) {
        delegate.setStringFormatter(
                stringFormatter != null ? location -> stringFormatter.toString(new InputLocation(location)) : null);
    } // -- void setStringFormatter( InputLocation.StringFormatter )

    /**
     * Method write.
     *
     * @param writer a writer object.
     * @param model a model object.

    @Override
    protected String getProjectsDirectory() {
        return null;
    }

    @Test
    void testCachedReactorProjectDependencies() throws Exception {
        MavenSession session = createMavenSession(
                new File("src/test/projects/lifecycle-dependency-resolver/pom.xml"), new Properties(), true);
        Collection<String> scopesToCollect = null;

    return requireNonNull(incidentEdgeMap.get(edge));
  }

  @Override
  public @Nullable N removeInEdge(E edge, boolean isSelfLoop) {
    if (!isSelfLoop) {
      return removeOutEdge(edge);
    }
    return null;
  }

  @Override
  public N removeOutEdge(E edge) {
    N previousNode = incidentEdgeMap.remove(edge);
    // We're relying on callers to call this method only with an edge that's in the graph.

                                {
                                    "type": "string",
                                },
                                {
                                    "type": "null",
                                },
                            ],
                            "title": "Description",
                        },
                        "name": {

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

        assertNotNull(request);
    }

    @Test
    @DisplayName("Constructor should handle null filename")
    void testConstructorWithNullFilename() {
        // When & Then
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, null));
    }

    @Test
    @DisplayName("Constructor should handle empty filename")
    void testConstructorWithEmptyFilename() {

 *
 * @author koichik
 */
public class ClIllegalArgumentException extends IllegalArgumentException {

    private static final long serialVersionUID = -3701473506893554853L;

    /** Name of the argument that is {@code null} */
    protected final String argName;

    /** Message code */
    protected final String messageCode;

    /** Arguments for the message */
    protected final Object[] args;

    /**