*
     * <p>If the combiner throws an {@code ExecutionException}, the cause of the thrown {@code
     * ExecutionException} will be extracted and returned as the cause of the new {@code
     * ExecutionException} that gets thrown by the returned combined future.
     *
     * <p>Canceling this future will attempt to cancel all the component futures.
     *

    int hashTableBits = Integer.SIZE - Integer.numberOfLeadingZeros(mask);
    metadata =
        CompactHashing.maskCombine(metadata, hashTableBits, CompactHashing.HASH_TABLE_BITS_MASK);
  }

  /** Gets the hash table mask using the stored number of hash table bits. */
  private int hashTableMask() {
    return (1 << (metadata & CompactHashing.HASH_TABLE_BITS_MASK)) - 1;
  }

  void incrementModCount() {

    server.enqueue(
      MockResponse(body = "This gets leaked."),
    )
    client =
      clientTestRule
        .newClientBuilder()
        .connectionPool(ConnectionPool(0, 10, TimeUnit.MILLISECONDS))
        .build()
    val request = Request(server.url("/"))
    client.newCall(request).execute() // Ignore the response so it gets leaked then GC'd.
    awaitGarbageCollection()

      return this;
    }

    /**
     * By default, if we are handed a value collection bigger than expectedValuesPerKey, presize to
     * accept that many elements.
     *
     * <p>This gets overridden in ImmutableSetMultimap.Builder to only trust the size of {@code
     * values} if it is a Set and therefore probably already deduplicated.
     */

      return this;
    }

    /**
     * By default, if we are handed a value collection bigger than expectedValuesPerKey, presize to
     * accept that many elements.
     *
     * <p>This gets overridden in ImmutableSetMultimap.Builder to only trust the size of {@code
     * values} if it is a Set and therefore probably already deduplicated.
     */

func (c *Connection) reconnected() {
	c.updateState(StateConnectionError)
	c.reconnects.Add(1)

	// Drain the outQueue, so any blocked messages can be sent.
	// We keep the queue, but start draining it, if it gets full.
	stopDraining := make(chan struct{})
	var wg sync.WaitGroup
	wg.Add(1)
	defer func() {
		close(stopDraining)
		wg.Wait()
	}()
	go func() {
		defer wg.Done()
		for {
			select {

			err = nil
		}
		if err != nil {
			return err
		}
	}

	delete(cache.iamPolicyDocsMap, policy)
	cache.updatedAt = time.Now()

	return nil
}

// GetPolicy - gets the policy definition. Allows specifying multiple comma
// separated policies - returns a combined policy.
func (store *IAMStoreSys) GetPolicy(name string) (policy.Policy, error) {
	if name == "" {

    int hashTableBits = Integer.SIZE - Integer.numberOfLeadingZeros(mask);
    metadata =
        CompactHashing.maskCombine(metadata, hashTableBits, CompactHashing.HASH_TABLE_BITS_MASK);
  }

  /** Gets the hash table mask using the stored number of hash table bits. */
  private int hashTableMask() {
    return (1 << (metadata & CompactHashing.HASH_TABLE_BITS_MASK)) - 1;
  }

  void incrementModCount() {

    multipartReader.use {
      while (true) {
        val part = multipartReader.nextPart() ?: break
        process(part.headers, part.body)
      }
    }
    ```

 *  New: `MediaType.parameter()` gets a parameter like `boundary` from a media type like
    `multipart/mixed; boundary="abc"`.

 *  New: `Authenticator.JAVA_NET_AUTHENTICATOR` forwards authentication requests to

This simplicity and flexibility allow doing things like using NoSQL databases as the main data storage system.

As it is very simple, it's relatively intuitive to learn, although the documentation gets somewhat technical at some points.