return elements;
    }
  }

  public enum KnownOrder {
    KNOWN_ORDER,
    UNKNOWN_ORDER
  }

  @SuppressWarnings("unchecked") // TODO(cpovirk): Stop using arrays.
  AbstractIteratorTester(
      int steps,
      Iterable<E> elementsToInsertIterable,
      Iterable<? extends IteratorFeature> features,
      Iterable<E> expectedElements,

	// it's decided to add functionality to close it in the version later than v2.
	if res.ttl != noEvictionTTL {
		go func(done <-chan struct{}) {
			ticker := time.NewTicker(res.ttl / numBuckets)
			defer ticker.Stop()
			for {
				select {
				case <-done:
					return
				case <-ticker.C:
					res.deleteExpired()
				}
			}
		}(res.done)
	}
	return &res
}

// Purge clears the cache completely.

	return b, r.readErr(true)
}

// Write writes len(p) bytes from p to the underlying buf.
// It returns the number of bytes written from p (0 <= n <= len(p))
// and any error encountered that caused the write to stop early.
// If blocking n < len(p) will be returned only if an error occurred.
// Write returns a non-nil error if it returns n < len(p).
// Write will not modify the slice data, even temporarily.

    supply trailers for a `Response`.

 *  New: `Path.asRequestBody()` is now a non-experimental API.

 *  New: `FileDescriptor.toRequestBody()` is now a non-experimental API.

 *  New: Stop using experimental coroutines APIs in our `okhttp-coroutines` artifact.

 *  Breaking: Move `gzip` from `RequestBody` to `Request.Builder`. This new API handles both

  }

  /**
   * OkHttp currently doesn't implement failing the request body stream independently of failing the
   * corresponding response body stream. This is necessary if we want servers to be able to stop
   * inbound data and send an early 400 before the request body completes.
   *
   * This test sends a slow request that is canceled by the server. It expects the response to still

      if (expectedOldCount != 0) {
        return false;
      } else if (newCount == 0) {
        return true;
      } else {
        // if our write lost the race, it must have lost to a nonzero value, so we can stop
        return countMap.putIfAbsent(element, new AtomicInteger(newCount)) == null;
      }
    }
    int oldValue = existingCounter.get();
    if (oldValue == expectedOldCount) {
      if (oldValue == 0) {

// Starts an in-process TensorFlow server.
TF_CAPI_EXPORT extern void TF_ServerStart(TF_Server* server, TF_Status* status);

// Stops an in-process TensorFlow server.
TF_CAPI_EXPORT extern void TF_ServerStop(TF_Server* server, TF_Status* status);

// Blocks until the server has been successfully stopped (via TF_ServerStop or
// TF_ServerClose).

      client =
        client
          .newBuilder()
          // Set the bad override directly on the client
          .withOverride(badValue)
          .addInterceptor { chain ->
            // the only way to stop a bad override of a client is with a good override of an interceptor
            chain
              .run {
                if (testItFails) {
                  this
                } else {

# name-prepped away to nothing.
# U+200B, U+2060, and U+FEFF, are ignored
http://GOO\u200b\u2060\ufeffgoo.com  s:http p:/ h:googoo.com

# Ideographic full stop (full-width period for Chinese, etc.) should be
# treated as a dot.
# U+3002 is mapped to U+002E (dot)
http://www.foo\u3002bar.com  s:http p:/ h:www.foo.bar.com

# Invalid unicode characters should fail...

            }
        };

        final boolean result = helper.tryStartOperation("test_op", null, 3);
        assertFalse(result);
        assertEquals(3, cleanupCallCount.get()); // Called with retries=3,2,1; stops when retries=0
    }

    // ===================================================================================
    //                                                         completeOperation Safety