* allowing the CAS below to succeed.
     */
    Thread currentThread = Thread.currentThread();
    if (!compareAndSet(null, currentThread)) {
      return; // someone else has run or is running.
    }

    boolean run = !isDone();
    T result = null;
    Throwable error = null;
    try {
      if (run) {
        result = runInterruptibly();
      }
    } catch (Throwable t) {

            <![CDATA[
        public static final String USER_LEVEL = "user-level";
        public static final String GLOBAL_LEVEL = "global-level";

        private String sourceLevel = USER_LEVEL;
        private boolean sourceLevelSet = false;

        public void setSourceLevel(String sourceLevel) {
            if (sourceLevelSet) {

    }


    @Override
    public UniAddress getByName ( String hostname, boolean possibleNTDomainOrWorkgroup ) throws UnknownHostException {
        return getAllByName(hostname, possibleNTDomainOrWorkgroup)[ 0 ];
    }


    @Override
    public UniAddress[] getAllByName ( String hostname, boolean possibleNTDomainOrWorkgroup ) throws UnknownHostException {

        } else {
            return new String[]{"ps", "x", "-o", "pid,cmd"};
        }
    }

    private static boolean isWindows() {
        return System.getProperty("os.name").toLowerCase(Locale.ROOT).contains("windows");
    }

    private static boolean isMacOS() {
        return System.getProperty("os.name").toLowerCase(Locale.ROOT).contains("mac");
    }

    private static class ExecResult {

public abstract class FessApiAdminAction extends FessApiAction {

    private static final Logger logger = LogManager.getLogger(FessApiAdminAction.class);

    @Override
    protected boolean isAccessAllowed() {
        try {
            return accessTokenService.getPermissions(request).map(permissions -> fessConfig.isApiAdminAccessAllowed(permissions))
                    .orElse(false);

 * sample of code points to detect unicode control characters commonly used in binary file
 * signatures.
 */
fun Buffer.isProbablyUtf8(): Boolean {
  try {
    val prefix = Buffer()
    val byteCount = size.coerceAtMost(64)
    copyTo(prefix, 0, byteCount)
    for (i in 0 until 16) {
      if (prefix.exhausted()) {
        break
      }

import javax.annotation.CheckForNull;

/** Methods factored out so that they can be emulated differently in GWT. */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
final class Platform {
  static boolean isInstanceOfThrowableClass(
      @CheckForNull Throwable t, Class<? extends Throwable> expectedClass) {
    return expectedClass.isInstance(t);
  }

  static void restoreInterruptIfIsInterruptedException(Throwable t) {

import javax.annotation.CheckForNull;

/** Methods factored out so that they can be emulated differently in GWT. */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
final class Platform {
  static boolean isInstanceOfThrowableClass(
      @CheckForNull Throwable t, Class<? extends Throwable> expectedClass) {
    return expectedClass.isInstance(t);
  }

  static void restoreInterruptIfIsInterruptedException(Throwable t) {

@Target(ElementType.FIELD)
public @interface Config {

    Source source() default Source.USER_PROPERTIES;

    String type() default "java.lang.String";

    String defaultValue() default "";

    boolean readOnly() default false;

    enum Source {
        USER_PROPERTIES,
        MODEL
    }

                        {
                            "required": False,
                            "schema": {
                                "title": "Teleport",
                                "type": "boolean",
                                "default": False,
                            },
                            "name": "teleport",
                            "in": "query",
                        }