OptionalEntity<String> stringOpt = OptionalUtil.ofNullable("string");
        OptionalEntity<Integer> intOpt = OptionalUtil.ofNullable(42);
        OptionalEntity<Boolean> boolOpt = OptionalUtil.ofNullable(true);
        OptionalEntity<Date> dateOpt = OptionalUtil.ofNullable(new Date());

        assertTrue(stringOpt.isPresent());
        assertTrue(intOpt.isPresent());

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

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

            @Nonnull
            @Override

            @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 = defaultArtifact.getArtifact().getPath();
                                }
                                return Optional.ofNullable(path);
                            }

                            @Override
                            public void setPath(ProducedArtifact artifact, Path path) {

        public OptionalThing<String> getSavedSubject() {
            return OptionalThing.ofNullable(subject, () -> {
                throw new IllegalStateException("Subject not found");
            });
        }

        @Override
        public OptionalThing<String> getSavedPlainText() {
            return OptionalThing.ofNullable(plainText, () -> {
                throw new IllegalStateException("Plain text not found");

     *
     * @return the {@code javax.tool} enumeration value corresponding to this {@code JavaPathType}
     */
    public Optional<JavaFileManager.Location> location() {
        return Optional.ofNullable(location);
    }

    /**
     * Returns the path type associated to the given {@code javax.tool} location.
     * This method is the converse of {@link #location()}.
     *

        return OptionalUtil.ofNullable(webConfig);
    }

    /**
     * Gets the file crawling configuration generated from the parsed GSA config.
     *
     * @return an optional containing the file configuration, or empty if no file URLs were found
     */
    public OptionalEntity<FileConfig> getFileConfig() {
        return OptionalUtil.ofNullable(fileConfig);
    }

    /**