entry = cacheEntry1;
    if (entry != null && entry.key == key) {
      return entry.value;
    }
    entry = cacheEntry2;
    if (entry != null && entry.key == key) {
      // Promote second cache entry to first so the access pattern
      // [K1, K2, K1, K3, K1, K4...] still hits the cache half the time.
      addToCache(entry);
      return entry.value;
    }
    return null;
  }

  @Override

// These APIs are mainly to facilitate testing and are subject to change.

// Records the op name in the `ForwardOperation`.
absl::Status Reset(AbstractOperation*, const char* op,
                   const char* raw_device_name, ForwardOperation*);

// Records the inputs in the `ForwardOperation`.
absl::Status AddInput(AbstractOperation*, AbstractTensorHandle*,

  // object refers to a metric describing a single kubernetes object
  // (for example, hits-per-second on an Ingress object).
  // +optional
  optional ObjectMetricSource object = 2;

  // pods refers to a metric describing each pod in the current scale target
  // (for example, transactions-processed-per-second).  The values will be
  // averaged together before being compared to the target value.
  // +optional

            v1 = internalSource,
            v2 = publicSource
        ).apply {
            assertHasErrors(
                *reportedMembers.map {
                    added(it.first, it.second)
                }.toTypedArray()
            )
            assertHasNoWarning()
            assertHasNoInformation()
        }
    }

    @Test

   * concurrent maps whose content may change while the method is running.
   *
   * <p>The serialized output consists of the number of entries, first key, first value, second key,
   * second value, and so on.
   */
  static <K extends @Nullable Object, V extends @Nullable Object> void writeMap(
      Map<K, V> map, ObjectOutputStream stream) throws IOException {
    stream.writeInt(map.size());

	t.Run("testStreamRoundtrip", func(t *testing.T) {
		defer timeout(5 * time.Second)()
		testStreamRoundtrip(t, local, remote)
		assertNoActive(t, connRemoteLocal)
		assertNoActive(t, connLocalToRemote)
	})
	t.Run("testStreamCancel", func(t *testing.T) {
		defer timeout(5 * time.Second)()
		testStreamCancel(t, local, remote)
		assertNoActive(t, connRemoteLocal)

 *   protected void visitWildcardType(WildcardType t) {
 *     throw new IllegalArgumentException("Cannot contain wildcard type.");
 *   }
 * }.visit(type);
 * }</pre>
 *
 * <p>One {@code Type} is visited at most once. The second time the same type is visited, it's
 * ignored by {@link #visit}. This avoids infinite recursion caused by recursive type bounds.
 *
 * <p>This class is not thread safe.
 *
 * @author Ben Yu
 */

	// dRWMutexUnlockTimeout - default timeout for the unlock call
	drwMutexUnlockCallTimeout = 30 * time.Second

	// dRWMutexForceUnlockTimeout - default timeout for the unlock call
	drwMutexForceUnlockCallTimeout = 30 * time.Second

	// dRWMutexRefreshInterval - default the interval between two refresh calls
	drwMutexRefreshInterval = 10 * time.Second

	drwMutexInfinite = 1<<63 - 1
)

	// Iterating over the test cases, calling the function under test and asserting the response.
	for i, testCase := range testCases {
		// obtain the put bucket policy request body.
		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
		recV4 := httptest.NewRecorder()
		// construct HTTP request for PUT bucket policy endpoint.

   * @param first the first element
   * @param second the second element
   * @param rest an array of additional elements, possibly empty
   * @return an unmodifiable list containing the specified elements
   */
  public static <E extends @Nullable Object> List<E> asList(
      @ParametricNullness E first, @ParametricNullness E second, E[] rest) {
    return new TwoPlusArrayList<>(first, second, rest);
  }