return stream(getPermissions()).get(stream -> stream.filter(s -> s.startsWith(fessConfig.getRoleSearchRolePrefix()))
                .map(s -> s.substring(1))
                .toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

 */
@Deprecated(since = "4.0.0")
public interface Source {

    /**
     * Gets a byte stream to the source contents. Closing the returned stream is the responsibility of the caller.
     *
     * @return A byte stream to the source contents, never {@code null}.
     * @throws IOException in case of IO issue
     */
    InputStream getInputStream() throws IOException;

            final Stream<QueryLog> stream = Stream.of(queryLogs);
            if (parallel) {
                stream.parallel();
            }
            final SuggestItem[] array = stream.flatMap(queryLog -> contentsParser
                    .parseQueryLog(queryLog, supportedFields, tagFieldNames, roleFieldName, readingConverter, normalizer)
                    .stream()).toArray(SuggestItem[]::new);

                            }
                        });
                        final List<String> newGroupList = stream(user.getGroupNames()).get(stream -> stream.collect(Collectors.toList()));
                        stream(user.getGroupNames()).of(stream -> stream.forEach(name -> {
                            if (oldGroupList.contains(name)) {
                                oldGroupList.remove(name);

     */
    @Nonnull
    String asString();

    /**
     * Obtain a Stream containing this node and all its descendants.
     *
     * @return a stream containing this node and its descendants
     */
    @Nonnull
    default Stream<Node> stream() {
        return Stream.concat(Stream.of(this), getChildren().stream().flatMap(Node::stream));
    }

     *
     * @param id the backup file ID to download
     * @return stream response containing the backup file data
     */
    // GET /api/admin/backup/file/{id}
    @Execute
    public StreamResponse get$file(final String id) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (stream(fessConfig.getIndexBackupAllTargets()).get(stream -> stream.anyMatch(s -> s.equals(id)))) {

        assertNotNull(actual);

        boolean hasLocation = actual.getProblems().stream()
                .anyMatch(p -> p.getLineNumber() == lineNumber && p.getColumnNumber() == columnNumber);

        if (!hasLocation) {
            String actualLocations = actual.getProblems().stream()
                    .map(p -> formatLocation(p.getColumnNumber(), p.getLineNumber()))

import java.util.AbstractMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import static gradlebuild.binarycompatibility.upgrades.UpgradedProperties.CURRENT_ACCESSORS_OF_UPGRADED_PROPERTIES;

        // Collect all build elements to process
        Stream<BuildContainer> buildContainers = Stream.concat(
                // Root level build
                Stream.of(new BuildContainer(root.child(BUILD).orElse(null), BUILD))
                        .filter(container -> container.element != null),
                // Profile builds
                root.child(PROFILES).stream()

        try {
            final ExtractData extractData = new ExtractData(
                    StreamUtil.stream(getStringsByXPath(document, contentXpath)).get(stream -> stream.collect(Collectors.joining(" "))));
            metadataXpathMap.entrySet().stream().forEach(e -> {
                extractData.putValues(e.getKey(), getStringsByXPath(document, e.getValue()));
            });
            return extractData;