public int bits() {
    return bits;
  }

  private static boolean supportsClone(Mac mac) {
    try {
      Object unused = mac.clone();
      return true;
    } catch (CloneNotSupportedException e) {
      return false;
    }
  }

  private static Mac getMac(String algorithmName, Key key) {
    try {
      Mac mac = Mac.getInstance(algorithmName);
      mac.init(key);
      return mac;

@GwtCompatible
public final class Throwables {
  private Throwables() {}

  /**
   * Throws {@code throwable} if it is an instance of {@code declaredType}. Example usage:
   *
   * <pre>
   * for (Foo foo : foos) {
   *   try {
   *     foo.bar();
   *   } catch (BarException | RuntimeException | Error t) {
   *     failure = t;
   *   }
   * }
   * if (failure != null) {
   *   throwIfInstanceOf(failure, BarException.class);

    } finally {
      Security.removeProvider("Conscrypt")
      client.close()
    }
  }

  @Test
  fun testRequestUsesPlayProvider() {
    assumeNetwork()

    try {
      try {
        ProviderInstaller.installIfNeeded(InstrumentationRegistry.getInstrumentation().targetContext)
      } catch (gpsnae: GooglePlayServicesNotAvailableException) {

        });

        reportErrors(errors, getReportFile().get().getAsFile());
    }

    private void reportErrors(Map<File, List<Error>> errors, File reportFile) {
        try (PrintWriter fw = new PrintWriter(new FileWriter(reportFile))) {
            writeHeader(fw);
            if (errors.isEmpty()) {
                fw.println("All clear!");
                return;
            }

            // NOTE: DuplicateArtifactAttachmentException is currently unchecked, so be careful removing this try/catch!
            // This is necessary to avoid creating compatibility problems for existing plugins that use
            // MavenProjectHelper.attachArtifact(..).
            try {
                MojoExecutionEvent mojoExecutionEvent = new MojoExecutionEvent(session, project, mojoExecution, mojo);

    assertEquals(getMethodName() + "(nullNotPresent) should return -1", -1, find(null));
  }

  @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
  public void testFind_nullNotContainedAndUnsupported() {
    try {
      assertEquals(getMethodName() + "(nullNotPresent) should return -1 or throw", -1, find(null));
    } catch (NullPointerException tolerated) {
    }
  }

  @CollectionFeature.Require(ALLOWS_NULL_VALUES)

            throws ArtifactMetadataRetrievalException {
        Set<Artifact> dependencies = new HashSet<>();

        if ("g".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {
                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {

    @Override
    public void lock() {
      aboutToAcquire(this);
      try {
        super.lock();
      } finally {
        lockStateChanged(this);
      }
    }

    @Override
    public void lockInterruptibly() throws InterruptedException {
      aboutToAcquire(this);
      try {
        super.lockInterruptibly();
      } finally {
        lockStateChanged(this);
      }

        try (InputStream is = Files.newInputStream(src)) {
            return new MavenStaxReader().read(is, false, null);
        }
    }

    protected void write(Model model, Path dest) throws IOException, XMLStreamException {
        String version = model.getModelVersion();
        Files.createDirectories(dest.getParent());
        try (Writer w = Files.newBufferedWriter(dest)) {

    checkNotNull(future);
    try {
      pseudoTimedGetUninterruptibly(future, 10, MILLISECONDS);
      fail();
    } catch (TimeoutException expected) {
    } catch (ExecutionException e) {
      throw new AssertionError(e);
    }
  }

  static void verifyTimedGetOnPendingFuture(Future<?> future) {
    try {
      getUninterruptibly(future, 0, SECONDS);
      fail();