} catch (ClassCastException tolerated) {
    }
    assertTrue(map.containsKey(map.keySet().iterator().next()));
    if (allowsNullKeys) {
      boolean unused = map.containsKey(null);
    } else {
      try {
        boolean unused2 = map.containsKey(null);
      } catch (NullPointerException optional) {
      }
    }
    assertInvariants(map);
  }

  public void testContainsValue() {

  @Override
  public void removePredecessor(N node) {
    @SuppressWarnings("unused")
    V unused = removeSuccessor(node);
  }

  @Override
  public @Nullable V removeSuccessor(N node) {
    return adjacentNodeValues.remove(node);
  }

  @Override
  public void addPredecessor(N node, V value) {
    @SuppressWarnings("unused")
    V unused = addSuccessor(node, value);
  }

  @Override

      for (int j = 0; j < NUM_THREADS; j++) {
        @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
        Future<?> possiblyIgnoredError = executorService.submit(addTask);
      }
      @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
      Future<?> possiblyIgnoredError = executorService.submit(executeTask);

    for (int i = 0; i < reps; i++) {
      String unused = interner.intern(Double.toHexString(Math.random()));
    }
    return reps;
  }

  @CanIgnoreReturnValue
  @Benchmark
  int strongInterner(int reps) {
    Interner<String> interner = Interners.newStrongInterner();
    for (int i = 0; i < reps; i++) {
      String unused = interner.intern(Double.toHexString(Math.random()));
    }
    return reps;

  }

  private static class WithWildcardType {

    @SuppressWarnings("unused")
    void withoutBound(List<?> list) {}

    @SuppressWarnings("unused")
    void withObjectBound(List<? extends Object> list) {}

    @SuppressWarnings("unused")
    void withUpperBound(List<? extends int[][]> list) {}

    @SuppressWarnings("unused")
    void withLowerBound(List<? super String[][]> list) {}

  public void testCompareAndSet() {
    double prev = Math.E;
    double unused = Math.E + Math.PI;
    AtomicDouble at = new AtomicDouble(prev);
    for (double x : VALUES) {
      assertBitEquals(prev, at.get());
      assertFalse(at.compareAndSet(unused, x));
      assertBitEquals(prev, at.get());
      assertTrue(at.compareAndSet(prev, x));
      assertBitEquals(x, at.get());

  public static class PublicFoo {}

  static class FooTest {
    @SuppressWarnings("unused") // accessed reflectively
    public void testPublic() {}

    @SuppressWarnings("unused") // accessed reflectively
    void testNotPublic() {}
  }

  // Shouldn't be mistaken as Foo's test
  static class Foo2Test {
    @SuppressWarnings("unused") // accessed reflectively
    public void testPublic() {}
  }

      for (Parameter param : Invokable.from(method).getParameters()) {
        tester.addEqualityGroup(param);
      }
    }
    tester.testEquals();
  }

  @SuppressWarnings("unused")
  private void someMethod(int i, int j) {}

  @SuppressWarnings("unused")
  private void anotherMethod(int i, String s) {}

      for (Parameter param : Invokable.from(method).getParameters()) {
        tester.addEqualityGroup(param);
      }
    }
    tester.testEquals();
  }

  @SuppressWarnings("unused")
  private void someMethod(int i, int j) {}

  @SuppressWarnings("unused")
  private void anotherMethod(int i, String s) {}

        () -> {
          ImmutableListMultimap<Object, Integer> unused =
              fluent(1, 2, 3).index(Functions.constant(null));
        });
  }

  public void testIndex_nullValue() {
    assertThrows(
        NullPointerException.class,
        () -> {
          ImmutableListMultimap<String, Integer> unused =
              fluent(1, null, 2).index(Functions.constant("foo"));
        });
  }