private long elapsedNanos;
  private long startTick;

  /**
   * Creates (but does not start) a new stopwatch using {@link System#nanoTime} as its time source.
   *
   * @since 15.0
   */
  public static Stopwatch createUnstarted() {
    return new Stopwatch();
  }

  /**
   * Creates (but does not start) a new stopwatch, using the specified time source.
   *
   * @since 15.0
   */

@ElementTypesAreNonnullByDefault
class CompactLinkedHashSet<E extends @Nullable Object> extends CompactHashSet<E> {

  /** Creates an empty {@code CompactLinkedHashSet} instance. */
  public static <E extends @Nullable Object> CompactLinkedHashSet<E> create() {
    return new CompactLinkedHashSet<>();
  }

  /**
   * Creates a <i>mutable</i> {@code CompactLinkedHashSet} instance containing the elements of the

@ElementTypesAreNonnullByDefault
public final class Callables {
  private Callables() {}

  /** Creates a {@code Callable} which immediately returns a preset value each time it is called. */
  public static <T extends @Nullable Object> Callable<T> returning(@ParametricNullness T value) {
    return () -> value;
  }

  /**
   * Creates an {@link AsyncCallable} from a {@link Callable}.
   *

   * surprising for implementations of {@code HashCode} that represent the number in big-endian
   * since everything else in the hashing API uniformly treats multibyte values as little-endian.
   *
   * <p>To create a {@code HashCode} from its string representation, see {@link #fromString}.
   */
  @Override
  public final String toString() {
    byte[] bytes = getBytesInternal();

	runtime_arena_arena_Free(a.a)
	a.a = nil
}

// New creates a new *T in the provided arena. The *T must not be used after
// the arena is freed. Accessing the value after free may result in a fault,
// but this fault is also not guaranteed.
func New[T any](a *Arena) *T {
	return runtime_arena_arena_New(a.a, reflectlite.TypeOf((*T)(nil))).(*T)
}

// MakeSlice creates a new []T with the provided capacity and length. The []T must

    private final int hashCode;

    /**
     * Creates a new source backed by the specified file.
     *
     * @param file The file, must not be {@code null}.
     * @deprecated Use {@link #FileSource(Path)} instead.
     */
    @Deprecated
    public FileSource(File file) {
        this(Objects.requireNonNull(file, "file cannot be null").toPath());
    }

    /**
     * Creates a new source backed by the specified file.
     *

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.
     * @param time The build time of the project in milliseconds.
     */
    protected BuildSummary(MavenProject project, long time) {
        this(project, time, time);
    }

    /**
     * Creates a new build summary for the specified project.
     *

package once

// Singleton contains a pointer to T that must be set once.
// Until the value is set all Get() calls will block.
type Singleton[T any] struct {
	v   *T
	set chan struct{}
}

// NewSingleton creates a new unset singleton.
func NewSingleton[T any]() *Singleton[T] {
	return &Singleton[T]{set: make(chan struct{}), v: nil}
}

// Get will return the singleton value.
func (s *Singleton[T]) Get() *T {
	<-s.set
	return s.v

#define TENSORFLOW_C_EAGER_C_API_REMOTE_TEST_UTIL_H_

// Run a function containing a MatMul op and check its output.
// If heavy_load_on_streaming_rpc is true, send some rpc requests before the one
// which creates a remote input, to simulate a scenario that the remote input
// is not ready when we start running an op or a function.
void TestRemoteExecuteSilentCopies(bool async, bool remote, bool func,

 *
 */
public class BuildFailure extends BuildSummary {

    /**
     * The cause of the build failure.
     */
    private final Throwable cause;

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.
     * @param time The build time of the project in milliseconds.