assertThrows(
        IllegalStateException.class,
        () -> {
          FluentFuture<Closeable> unused = closingFuture.finishToFuture();
        });
  }

  public void testFinishToFuture_preventsFurtherDerivation() {
    ClosingFuture<String> closingFuture = ClosingFuture.from(immediateFuture("value1"));
    FluentFuture<String> unused = closingFuture.finishToFuture();
    assertDerivingThrowsIllegalStateException(closingFuture);
  }

      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);

    assertThat(loadAllCount.get()).isEqualTo(0);

    Object unused1 = baseLoader.load(new Object());
    @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
    Future<?> possiblyIgnoredError = baseLoader.reload(new Object(), new Object());
    Map<Object, Object> unused2 = baseLoader.loadAll(ImmutableList.of(new Object()));
    assertThat(loadCount.get()).isEqualTo(1);

  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) {}

  }

  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) {}

        () -> {
          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"));
        });
  }

   * mentioned in the method Javadoc does in fact compile.
   */

  @SuppressWarnings("unused") // compilation test
  public void testSampleCodeError1() {
    Optional<Integer> optionalInt = getSomeOptionalInt();
    // Number value = optionalInt.or(0.5); // error
  }

  @SuppressWarnings("unused") // compilation test
  public void testSampleCodeError2() {