* result of a <i>future</i> call to {@code next()}.
   */
  protected abstract @Nullable T computeNext(T previous);

  @Override
  public final boolean hasNext() {
    return nextOrNull != null;
  }

  @Override
  public final T next() {
    if (nextOrNull == null) {
      throw new NoSuchElementException();
    }
    T oldNext = nextOrNull;

        return this.creds;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#renewCredentials(java.lang.String, java.lang.Throwable)
     */
    @Override
    public boolean renewCredentials(final String locationHint, final Throwable error) {
        final Credentials cred = getCredentials();
        if (cred instanceof final SmbRenewableCredentials renewable) {

      cachedRequest: Headers,
      newRequest: Request,
    ): Boolean =
      cachedResponse.headers.varyFields().none {
        cachedRequest.values(it) != newRequest.headers(it)
      }

    /** Returns true if a Vary header contains an asterisk. Such responses cannot be cached. */
    fun Response.hasVaryAll(): Boolean = "*" in headers.varyFields()

    /**

    protected Query doToQuery(final QueryShardContext context) throws IOException {
        throw new UnsupportedOperationException("Query processing is not supported.");
    }

    @Override
    protected boolean doEquals(final StoredLtrQueryBuilder other) {
        return Objects.equals(modelName, other.modelName) && Objects.equals(featureSetName, other.featureSetName)

        StackTraceElement[] stackTrace = exception.getStackTrace();
        assertTrue(stackTrace.length > 0);

        // Verify that the current test method appears in the stack trace
        boolean foundTestMethod = false;
        for (StackTraceElement element : stackTrace) {
            if (element.getMethodName().equals("test_stackTrace_isPresent")) {
                foundTestMethod = true;
                break;

    expectUnchanged();
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutAllOnlyCallsIteratorOnce() {
    Iterable<V> iterable =
        new Iterable<V>() {
          private boolean calledIteratorAlready = false;

          @Override
          public Iterator<V> iterator() {
            checkState(!calledIteratorAlready);
            calledIteratorAlready = true;

     * @param outputFile the output file where the thumbnail should be saved
     * @return false always, as this generator does not create thumbnails
     */
    @Override
    public boolean generate(final String thumbnailId, final File outputFile) {
        return false;
    }

    /**
     * Destroys this generator and releases any resources.
     * This implementation does nothing as no resources are held.

    this.comparator = checkNotNull(comparator);
  }

  @Override
  public int compare(@ParametricNullness T a, @ParametricNullness T b) {
    return comparator.compare(a, b);
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof ComparatorOrdering) {
      ComparatorOrdering<?> that = (ComparatorOrdering<?>) object;

        if (value == null) {
            return null;
        }
        return StringConversionUtil.toString((Date) value, pattern);
    }

    @Override
    public boolean isTarget(final Class<?> clazz) {
        assertArgumentNotNull("clazz", clazz);
        return clazz == java.sql.Date.class;
    }

     * in the toolchain plugin configuration.
     * @param requirements Map<String, String> key value pair, may not be {@code null}
     * @return {@code true} if the requirements match, otherwise {@code false}
     */
    boolean matchesRequirements(Map<String, String> requirements);

    /**
     *
     * @return the original model wrapped by this interface
     */
    ToolchainModel getModel();