assertEquals("guest", permissionHelper.encode("guest"));
        } finally {
            ComponentUtil.setFessConfig(null);
        }
    }

    public void test_decode() {
        assertNull(permissionHelper.decode(null));
        assertNull(permissionHelper.decode(""));
        assertNull(permissionHelper.decode(" "));
        assertNull(permissionHelper.decode("D"));

  @Override
  @CheckForNull
  public Entry<K, V> firstEntry() {
    return Iterators.<@Nullable Entry<K, V>>getNext(entryIterator(), null);
  }

  @Override
  @CheckForNull
  public Entry<K, V> lastEntry() {
    return Iterators.<@Nullable Entry<K, V>>getNext(descendingEntryIterator(), null);
  }

  @Override
  @CheckForNull
  public Entry<K, V> pollFirstEntry() {
    return Iterators.pollNext(entryIterator());
  }

     *             installation has failed.
     * @throws IllegalArgumentException in case of parameter {@code request} is {@code null} or parameter
     *             {@code localRepository} is {@code null} or {@code localRepository} is not a directory
     *             or parameter {@code mavenArtifacts} is {@code null} or
     *             {@code mavenArtifacts.isEmpty()} is {@code true}.
     */

     * @param context The environmental context used to determine the activation status of the profile, must not be
     *            {@code null}.
     * @param problems The container used to collect problems (e.g. bad syntax) that were encountered, must not be
     *            {@code null}.
     * @return {@code true} if the profile is active, {@code false} otherwise.

     *            false} to use the update policy configured on each repository.
     * @return This request, never {@code null}.
     */
    RepositoryRequest setForceUpdate(boolean forceUpdate);

    /**
     * Gets the local repository to use.
     *
     * @return The local repository to use or {@code null} if not set.
     */
    ArtifactRepository getLocalRepository();

    /**
     * Sets the local repository to use.

internal fun Regex.matchAtPolyfill(
  input: CharSequence,
  index: Int,
): MatchResult? {
  val candidate = find(input, index) ?: return null
  if (candidate.range.first != index) return null // Didn't match where it should have.
  return candidate
}

@JvmField
val EMPTY_BYTE_ARRAY: ByteArray = ByteArray(0)

/** Byte order marks. */
internal val UNICODE_BOMS =

        try {
            SmbFileHandleImpl h = this.handle;
            if ( h != null ) {
                h.close();
            }
        }
        catch ( SmbException se ) {
            throw seToIoe(se);
        }
        finally {
            this.tmp = null;
            this.handle = null;
            if ( this.unsharedFile ) {
                this.file.close();
            }
        }

            }
            return null;
        }
    }

    static class BaseModelResolver implements ModelResolver {
        @Override
        public ModelSource resolveModel(String groupId, String artifactId, String version)
                throws UnresolvableModelException {
            return null;
        }

        @Override

    check(null !in (interceptors as List<Interceptor?>)) {
      "Null interceptor: $interceptors"
    }
    check(null !in (networkInterceptors as List<Interceptor?>)) {
      "Null network interceptor: $networkInterceptors"
    }

    if (connectionSpecs.none { it.isTls }) {
      check(sslSocketFactoryOrNull == null)
      check(certificateChainCleaner == null)
      check(x509TrustManager == null)

        }
        ParameterizedType toParameterizedType = expectArgument(ParameterizedType.class, to);
        if (fromParameterizedType.getOwnerType() != null
            && toParameterizedType.getOwnerType() != null) {
          populateTypeMappings(
              mappings, fromParameterizedType.getOwnerType(), toParameterizedType.getOwnerType());
        }
        checkArgument(