Element cleanPlugin = plugins.children("plugin")
                    .filter(p -> "maven-clean-plugin"
                            .equals(p.child("artifactId").orElse(null).textContent()))
                    .findFirst()
                    .orElse(null);
            assertNotNull(cleanPlugin);

            Element cleanExecutions = cleanPlugin.child("executions").orElse(null);
            Element preCleanExecution = cleanExecutions

                            .stream()
                            .filter(p -> p.getPath().equals(project1.getPath() + ":qa"))
                            .findFirst();
                        qaSubproject.ifPresent(
                            qa -> qa.getSubprojects()
                                .forEach(p -> checkTaskProvider.configure(task -> task.dependsOn(p.getPath() + ":check")))

            MavenProject resumingFromProject = projects.stream()
                    .filter(project -> projectSelector.isMatchingProject(project, selector, reactorDirectory))
                    .findFirst()
                    .orElseThrow(() -> new MavenExecutionException(
                            "Could not find project to resume reactor build from: " + selector + " vs "

                        .getSrcDirs()
                        .stream()
                        .filter(f -> f.isDirectory() && f.getName().equals("resources"))
                        .findFirst()
                        .orElse(null)
                );
            });

        defaultSourceSet.getOutput().dir(copyRestYamlApiTask.map(CopyRestApiTask::getOutputResourceDir));

                yamlTestSourceSet.getResources()
                    .getSrcDirs()
                    .stream()
                    .filter(f -> f.isDirectory() && f.getName().equals("resources"))
                    .findFirst()
                    .orElse(null)
            );
        });

        // Register rest resources with source set
        yamlTestSourceSet.getOutput()
            .dir(
                project.getTasks()

    public static String getJavaHome(final int version) {
        List<JavaHome> javaHomes = BuildParams.getJavaVersions();
        Optional<JavaHome> java = javaHomes.stream().filter(j -> j.getVersion() == version).findFirst();
        return java.orElseThrow(() -> new GradleException("JAVA" + version + "_HOME required")).getJavaHome().get().getAbsolutePath();
    }

   * will match, use {@link #tryFind} or {@link #find(Iterable, Predicate, Object)} instead.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code stream.filter(predicate).findFirst().get()}
   *
   * @throws NoSuchElementException if no element in {@code iterable} matches the given predicate
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T find(

            List<MavenProject> projects, File reactorDirectory, String selector) {
        return projects.stream()
                .filter(project -> isMatchingProject(project, selector, reactorDirectory))
                .findFirst();
    }

    File getBaseDirectoryFromRequest(MavenExecutionRequest request) {
        return request.getBaseDirectory() != null ? new File(request.getBaseDirectory()) : null;
    }

    }

    @Override
    public PluginExecution getModel() {
        return delegate.getPlugin().getExecutions().stream()
                .filter(pe -> Objects.equals(pe.getId(), getExecutionId()))
                .findFirst()
                .map(org.apache.maven.model.PluginExecution::getDelegate)
                .orElse(null);
    }

    @Override
    public MojoDescriptor getDescriptor() {

 */
public class DosErrorTest {
    private static Optional<Integer> findNtStatus(int dosErrorCode) {
        return Arrays.stream(DosError.DOS_ERROR_CODES).filter(pair -> pair[0] == dosErrorCode).map(pair -> pair[1]).findFirst();
    }

    @Test
    @DisplayName("DOS_ERROR_CODES is non‑null and non‑empty")
    void testCodesArrayExistence() {
        assertNotNull(DosError.DOS_ERROR_CODES, "DOS_ERROR_CODES should be non‑null");