}
            if (failure) {
                return results;
            }

            List<Callable<List<ProjectBuildingResult>>> callables = interimResults.stream()
                    .map(interimResult ->
                            (Callable<List<ProjectBuildingResult>>) () -> doBuild(projectIndex, interimResult))
                    .collect(Collectors.toList());

            try {

    assertEquals(key, result.get(0));
    assertEquals(key, result.get(1));
    assertEquals(key + suffix, cache.getUnchecked(key));
  }

  static <T> Callable<T> throwing(final Exception exception) {
    return new Callable<T>() {
      @Override
      public T call() throws Exception {
        throw exception;
      }
    };
  }

    assertEquals(key, result.get(0));
    assertEquals(key, result.get(1));
    assertEquals(key + suffix, cache.getUnchecked(key));
  }

  static <T> Callable<T> throwing(final Exception exception) {
    return new Callable<T>() {
      @Override
      public T call() throws Exception {
        throw exception;
      }
    };
  }

    private final CountDownLatch returned = new CountDownLatch(1);
    private Object proxy;

    @SuppressWarnings("unchecked") // proxy for a generic class
    <V> Callable<V> waitFor(Callable<V> callable) {
      return waitFor(callable, Callable.class);
    }

    @SuppressWarnings("unchecked") // proxy for a generic class
    <V> ClosingCallable<V> waitFor(ClosingCallable<V> closingCallable) {

    private final CountDownLatch returned = new CountDownLatch(1);
    private Object proxy;

    @SuppressWarnings("unchecked") // proxy for a generic class
    <V> Callable<V> waitFor(Callable<V> callable) {
      return waitFor(callable, Callable.class);
    }

    @SuppressWarnings("unchecked") // proxy for a generic class
    <V> ClosingCallable<V> waitFor(ClosingCallable<V> closingCallable) {

            else -> null
        }

        return (unambiguousSymbol as? FirCallableSymbol<*>)
    }

    /**
     * If [namedReference] is ambiguous and all candidates point to the callables with same callableId,
     * returns the first candidate; otherwise returns null.
     */
    private fun getSingleUnambiguousCandidate(namedReference: FirErrorNamedReference): FirCallableSymbol<*>? {

            The parameter is available only for compatibility.
            """
        ),
    ] = ...,
    *,
    default_factory: Annotated[
        Union[Callable[[], Any], None],
        Doc(
            """
            A callable to generate the default value.

            This doesn't affect `Path` parameters as the value is always required.
            The parameter is available only for compatibility.

  }

  /**
   * Executes {@code callable} on the specified {@code executor}, returning a {@code Future}.
   *
   * @throws RejectedExecutionException if the task cannot be scheduled for execution
   * @since 28.2
   */
  public static <O extends @Nullable Object> ListenableFuture<O> submit(
      Callable<O> callable, Executor executor) {

        Supplier<T> s = asSupplier(supplier);
        if (cache == null) {
            return s.get();
        } else {
            return cache.computeIfAbsent(groupId, artifactId, version, tag, s);
        }
    }

    private static <T> T cache(ModelCache cache, Source source, String tag, Callable<T> supplier) {

                    is FirResolvedNamedReference -> when (calleeReference.resolvedSymbol) {
                        // `calleeReference.resolvedSymbol` isn't guaranteed to be callable. For example, function type parameters used in
                        // expression positions (e.g. `T` in `println(T)`) are parsed as `KtSimpleNameExpression` and built into