}

  private static class WithConstructorAndTypeParameter<T> {
    @SuppressWarnings("unused") // by reflection
    <X> WithConstructorAndTypeParameter() {}
  }

  public void testConstructor_returnType_hasTypeParameter() throws Exception {
    Class<WithConstructorAndTypeParameter> type = WithConstructorAndTypeParameter.class;
    @SuppressWarnings("rawtypes") // Foo.class

  }

  @SuppressWarnings("unused") // for NullPointerTester
  private static class SubclassOverridesTheWrongMethod extends BaseClassThatFailsToThrow {
    @Keep
    public void oneArg(@Nullable CharSequence s) {}
  }

  public void testSubclassOverridesTheWrongMethod() {
    shouldFail(new SubclassOverridesTheWrongMethod());
  }

  @SuppressWarnings("unused") // for NullPointerTester

        String a,
        int b,
        // oneConstantOnly doesn't matter since it's not nullable and can be only 1 value.
        @SuppressWarnings("unused") OneConstantEnum oneConstantOnly,
        // noConstant doesn't matter since it can only be null
        @SuppressWarnings("unused") @Nullable NoConstantEnum noConstant) {
      return new GoodEquals(a, b);
    }

    // instance method ignored

      @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
      Future<?> possiblyIgnoredError = threadPool.submit(new Producer(q, 20));
      @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
      Future<?> possiblyIgnoredError1 = threadPool.submit(new Producer(q, 20));

 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@SuppressWarnings({
  "deprecation", // tests of numerous deprecated methods
  "nullness", // TODO(cpovirk): fix errors
})
@NullUnmarked
public class ThrowablesTest extends TestCase {
  // We're testing that the method is in fact equivalent to throwing the exception directly.
  @SuppressWarnings("ThrowIfUncheckedKnownUnchecked")
  public void testThrowIfUnchecked_unchecked() {

    return new WeakReference<>(
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/487687332
          @Override
          protected void finalize() {
            finalizerRan.countDown();
          }
        });
  }

  // We call the method only after checking that it's present.
  @IgnoreJRERequirement
  @SuppressWarnings({
    "Java8ApiChecker",

        @SuppressWarnings("unchecked")
        final Map<String, Object> user = (Map<String, Object>) attributes.get("user");
        assertEquals(123L, user.get("id"));

        @SuppressWarnings("unchecked")
        final List<Object> userRoles = (List<Object>) user.get("roles");
        assertEquals(2, userRoles.size());

        @SuppressWarnings("unchecked")

        return false;
      }
    }
    return true;
  }

  @SuppressWarnings("deprecation")
  public void testSimpleStringUtf8() {
    assertEquals(
        murmur3_32().hashBytes("ABCDefGHI\u0799".getBytes(UTF_8)),
        murmur3_32().hashString("ABCDefGHI\u0799", UTF_8));
  }

  @SuppressWarnings("deprecation")
  public void testEncodedStringInputs() {
    Random rng = new Random(0);

        .testEquals();
  }

  @SuppressWarnings("unchecked") // proxy of List<String>
  private static List<String> newDelegatingList(List<String> delegate) {
    return Reflection.newProxy(List.class, new DelegatingInvocationHandler(delegate));
  }

  @SuppressWarnings("unchecked") // proxy of List<String>

  public void testPadEnd_negativeMinLength() {
    assertThat(Strings.padEnd("x", -1, '-')).isSameInstanceAs("x");
  }

  @SuppressWarnings("nullness") // test of a bogus call
  public void testPadEnd_null() {
    assertThrows(NullPointerException.class, () -> Strings.padEnd(null, 5, '0'));
  }

  @SuppressWarnings("InlineMeInliner") // test of method that doesn't just delegate
  public void testRepeat() {
    String input = "20";