*
     * @param cause the cause which is saved for later retrieval by the {@link #getCause()} method.
     *              A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.
     * @since 3.8.3
     */
    public MojoExecutionException(Throwable cause) {
        super(cause);
    }

                    "parameters": [
                        {
                            "required": False,
                            "schema": {
                                "anyOf": [{"type": "string"}, {"type": "null"}],
                                "title": "Q",
                            },
                            "name": "q",
                            "in": "query",
                        },

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

        try {
            Files.createDirectories(resumeProperties.getParent());
            try (Writer writer = Files.newBufferedWriter(resumeProperties)) {
                properties.store(writer, null);
            }
        } catch (IOException e) {
            String message = "Could not create " + RESUME_PROPERTIES_FILENAME + " file.";
            throw new BuildResumptionPersistenceException(message, e);
        }

     *
     * @param artifact The artifact whose available versions should be determined, must not be {@code null}.
     * @return The available versions of the artifact or an empty list if none, never {@code null}.
     * @since 3.0-alpha-3
     */
    List<String> findVersions(Artifact artifact);

    /**

                    false, // --all
                    false, // --infer
                    false, // --fix-model
                    false, // --plugins
                    null // --model
                    ));

            // Should apply default behavior when all options are explicitly disabled
            assertTrue(
                    strategy.isApplicable(context),

            File[] psOutputs = rootProjectDir.listFiles((__, name) -> name.endsWith(".psoutput") || name.endsWith(".threaddump"));
            if (psOutputs != null) {
                Stream.of(psOutputs).forEach(File::delete);
            }
        }
    }

    static void pkill(String pid) {

    public Maven maven;

    @Override
    public void doCloseContainer() throws Exception {
        try {
            super.doCloseContainer();
        } finally {
            maven = null;
        }
    }

    @Override
    public MavenOptions options() {
        return (MavenOptions) super.options();
    }

    private List<SettingsProblem> problems;

    DefaultSettingsBuildingResult(Settings effectiveSettings, List<SettingsProblem> problems) {
        this.effectiveSettings = effectiveSettings;
        this.problems = (problems != null) ? problems : new ArrayList<>();
    }

    @Override
    public Settings getEffectiveSettings() {
        return effectiveSettings;
    }

    @Override
    public List<SettingsProblem> getProblems() {

class PrerequisitesTest {

    @Test
    void testHashCodeNullSafe() {
        new Prerequisites().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Prerequisites().equals(null));

        new Prerequisites().equals(new Prerequisites());
    }

    @Test
    void testEqualsIdentity() {
        Prerequisites thing = new Prerequisites();