*/
    public String getServerPath() {
        return getSessionManager().getAttribute(Constants.SEARCH_ENGINE_API_ACCESS_TOKEN, String.class)
                .map(token -> ADMIN_SERVER + token)
                .orElseThrow(() -> new FessSystemException("Cannot create an access token."));
    }

    /**
     * Generates and saves a new access token for the current session.
     * The token is used to authenticate API requests.

 *
 * <ul>
 *   <li>This class is serializable; {@code java.util.Optional} is not.
 *   <li>{@code java.util.Optional} has the additional methods {@code ifPresent}, {@code filter},
 *       {@code flatMap}, and {@code orElseThrow}.
 *   <li>{@code java.util} offers the primitive-specialized versions {@code OptionalInt}, {@code
 *       OptionalLong} and {@code OptionalDouble}, the use of which is recommended; Guava does not
 *       have these.
 * </ul>

        return groupByMajor.getOrDefault(key, emptyList())
            .stream()
            .max(Version::compareTo)
            .orElseThrow(() -> new IllegalStateException("Unexpected number of versions in collection"));
    }

    private Map<Integer, List<Version>> getReleasedMajorGroupedByMinor() {

 *
 * <ul>
 *   <li>This class is serializable; {@code java.util.Optional} is not.
 *   <li>{@code java.util.Optional} has the additional methods {@code ifPresent}, {@code filter},
 *       {@code flatMap}, and {@code orElseThrow}.
 *   <li>{@code java.util} offers the primitive-specialized versions {@code OptionalInt}, {@code
 *       OptionalLong} and {@code OptionalDouble}, the use of which is recommended; Guava does not
 *       have these.
 * </ul>

            MavenProject rootProject = session.getAllProjects().stream()
                    .filter(MavenProject::isExecutionRoot)
                    .findFirst()
                    .orElseThrow(() -> new IllegalStateException("No project in the session is execution root"));

            buildResumptionAnalyzer.determineBuildResumptionData(result).ifPresent(resumption -> {
                try {

        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();
    }

                    return group.contains(prefix) || name.contains(prefix);
                })
                .findFirst()
            : java.util.Optional.empty();

        return license.orElseThrow(
            () -> new IllegalStateException(
                "Unable to find "
                    + infoFileSuffix
                    + " file for dependency "
                    + group

    assertThat(response1.body.string()).isEqualTo("ABC")
    val cacheEntry =
      fileSystem.allPaths
        .stream()
        .filter { e: Path -> e.name.endsWith(".0") }
        .findFirst()
        .orElseThrow { NoSuchElementException() }
    corruptCertificate(cacheEntry)
    val response2 = client.newCall(request).execute() // Not Cached!
    assertThat(response2.body.string()).isEqualTo("DEF")