undirectedNetwork.addNode(N0);
    undirectedNetwork.addEdge(N1, N2, E12);
    undirectedNetwork.addEdge(N2, N1, E12_A); // adds parallel edge, won't be in Graph edges
    undirectedNetwork.addEdge(N1, N3, E13);
    undirectedNetwork.addEdge(N4, N4, E44);
    containsExactlySanityCheck(
        undirectedNetwork.asGraph().edges(),

    undirectedNetwork.addNode(N0);
    undirectedNetwork.addEdge(N1, N2, E12);
    undirectedNetwork.addEdge(N2, N1, E12_A); // adds parallel edge, won't be in Graph edges
    undirectedNetwork.addEdge(N1, N3, E13);
    undirectedNetwork.addEdge(N4, N4, E44);
    containsExactlySanityCheck(
        undirectedNetwork.asGraph().edges(),

    int nTasks = 1000;
    int nSeededEntries = 100;
    Set<String> expectedKeys = Sets.newHashSetWithExpectedSize(nTasks + nSeededEntries);
    // seed the map, so its segments have a count>0; otherwise, clear() won't visit the in-progress
    // entries
    for (int i = 0; i < nSeededEntries; i++) {
      String s = "b" + i;
      cache.getUnchecked(s);
      expectedKeys.add(s);
    }
    computationShouldWait.set(true);

        Class<?> optionalClass = Class.forName("java.util.Optional");
        /*
         * We don't *need* to use reflection to access Optional: It's available on all JDKs we
         * support, and Android code won't get this far, anyway, because ProcessHandle is
         * unavailable. But given how much other reflection we're using, we might as well use it
         * here, too, so that we don't need to also suppress an AndroidApiChecker error.

    }

    @Override
    public int available() throws IOException {
      return (int) Math.min(in.available(), left);
    }

    // it's okay to mark even if mark isn't supported, as reset won't work
    @Override
    public synchronized void mark(int readLimit) {
      in.mark(readLimit);
      mark = left;
    }

    @Override
    public int read() throws IOException {

        Collections2.orderedPermutations(list, Ordering.natural());

    assertPermutationsCount(105, permutations);
  }

  public void testOrderedPermutationSetSizeOverflow() {
    // 12 elements won't overflow
    assertEquals(
        479001600 /*12!*/,
        Collections2.orderedPermutations(newArrayList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12))
            .size());
    // 13 elements overflow an int

        Collections2.orderedPermutations(list, Ordering.natural());

    assertPermutationsCount(105, permutations);
  }

  public void testOrderedPermutationSetSizeOverflow() {
    // 12 elements won't overflow
    assertEquals(
        479001600 /*12!*/,
        Collections2.orderedPermutations(newArrayList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12))
            .size());
    // 13 elements overflow an int

   *
   * @throws IOException if an I/O error occurs while reading from this source or if {@code
   *     processor} throws an {@code IOException}
   * @since 16.0
   */
  @CanIgnoreReturnValue // some processors won't return a useful result
  @ParametricNullness
  public <T extends @Nullable Object> T readLines(LineProcessor<T> processor) throws IOException {
    checkNotNull(processor);

    Closer closer = Closer.create();

    ListenableFuture<Object> input =
        UncheckedThrowingFuture.throwingRuntimeException(new MyRuntimeException());

    // We'd catch only MyRuntimeException.class here, but then the test won't compile under GWT.
    ListenableFuture<Object> output =
        catching(input, Throwable.class, identity(), directExecutor());
    assertThat(getDone(output)).isInstanceOf(MyRuntimeException.class);
  }

   *
   * @throws IOException if an I/O error occurs while reading from this source or if {@code
   *     processor} throws an {@code IOException}
   * @since 16.0
   */
  @CanIgnoreReturnValue // some processors won't return a useful result
  @ParametricNullness
  public <T extends @Nullable Object> T read(ByteProcessor<T> processor) throws IOException {
    checkNotNull(processor);

    Closer closer = Closer.create();
    try {