@Nonnull
            @Override
            public Optional<Path> getPath() {
                return Optional.ofNullable(path);
            }

            @Nonnull
            @Override
            public Optional<Source> getSource() {
                return Optional.ofNullable(source);
            }

            @Override
            public boolean isAllowStubModel() {

        }
        Path path = paths.get(id);
        if (path == null && artifact instanceof DefaultArtifact) {
            path = ((DefaultArtifact) artifact).getArtifact().getPath();
        }
        return Optional.ofNullable(path);
    }

    @Override
    public void setPath(@Nonnull ProducedArtifact artifact, Path path) {
        String id = id(nonNull(artifact, "artifact"));

        return Objects.equals(p, packaging);
    }

    private static Optional<String> getActivationPackaging(org.apache.maven.model.Profile profile) {
        return Optional.ofNullable(profile)
                .map(org.apache.maven.model.Profile::getDelegate)
                .map(Profile::getActivation)
                .map(Activation::getPackaging);
    }

                coreExtensions,
                options);
        this.jvmArguments = jvmArguments;
    }

    @Override
    public Optional<List<String>> jvmArguments() {
        return Optional.ofNullable(jvmArguments);
    }

            @Nonnull
            @Override
            public Optional<Project> getProject() {
                return Optional.ofNullable(project);
            }

            @Nonnull
            @Override
            public Optional<Artifact> getRootArtifact() {
                return Optional.ofNullable(rootArtifact);
            }

            @Nonnull
            @Override

      }
    }

    @IgnoreJRERequirement // see enclosing class (whose annotation Animal Sniffer ignores here...)
    Optional<Object> getOptional() {
      if (extras.isEmpty()) {
        return Optional.ofNullable(element);
      } else {
        throw multiples(false);
      }
    }

    Object getElement() {
      if (element == null) {
        throw new NoSuchElementException();

            throws ToolchainManagerException {
        MavenSession s = InternalMavenSession.from(session).getMavenSession();
        return Optional.ofNullable(toolchainManagerPrivate.getToolchainFromBuildContext(type, s))
                .map(this::toToolchain);
    }

    @Override

    }

    private Optional<String> extractRequiredJavaVersion(PlexusConfiguration c) {
        return Optional.ofNullable(c.getChild("requiredJavaVersion")).map(PlexusConfiguration::getValue);
    }

    private Optional<String> extractRequiredMavenVersion(PlexusConfiguration c) {
        return Optional.ofNullable(c.getChild("requiredMavenVersion")).map(PlexusConfiguration::getValue);
    }

        }
        return null;
    }

    @Nonnull
    public static Path findMandatoryRoot(Path topDirectory) {
        requireNonNull(topDirectory, "topDirectory");
        return getCanonicalPath(Optional.ofNullable(
                        ServiceLoader.load(RootLocator.class).iterator().next().findMandatoryRoot(topDirectory))
                .orElseThrow());
    }

    }

    public OptionalEntity<WebConfig> getWebConfig() {
        return OptionalUtil.ofNullable(webConfig);
    }

    public OptionalEntity<FileConfig> getFileConfig() {
        return OptionalUtil.ofNullable(fileConfig);
    }

    public LabelType[] getLabelTypes() {
        return labelList.toArray(new LabelType[labelList.size()]);
    }