throw new RuntimeException(throwable);
  }

  /**
   * Returns the innermost cause of {@code throwable}. The first throwable in a chain provides
   * context from when the error or exception was initially detected. Example usage:
   *
   * <pre>
   * assertEquals("Unable to assign a customer id", Throwables.getRootCause(e).getMessage());
   * </pre>
   *

    assertThat(map.ticker).isSameInstanceAs(NULL_TICKER);

    assertThat(map.concurrencyLevel).isEqualTo(4);

    // concurrency level
    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertThat(map.segments[0].table.length()).isEqualTo(16 / map.segments.length);

    assertThat(map.evictsBySize()).isFalse();
    assertThat(map.expires()).isFalse();

    assertThat(map.ticker).isSameInstanceAs(NULL_TICKER);

    assertThat(map.concurrencyLevel).isEqualTo(4);

    // concurrency level
    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertThat(map.segments[0].table.length()).isEqualTo(16 / map.segments.length);

    assertThat(map.evictsBySize()).isFalse();
    assertThat(map.expires()).isFalse();

   * that are not the first to be added or last to be removed for their key.
   */
  private transient int modCount;

  /** Creates a new, empty {@code LinkedListMultimap} with the default initial capacity. */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedListMultimap<K, V> create() {
    return new LinkedListMultimap<>();
  }

  /**

 * provide two {@code static} creation methods: {@code create()}, returning an empty multiset, and
 * {@code create(Iterable<? extends E>)}, returning a multiset containing the given initial
 * elements. This is simply a refinement of {@code Collection}'s constructor recommendations.
 *
 * <p>As with other collection types, the modification operations are optional, and should throw

   * in Waiter.
   */

  /**
   * This field encodes the current state of the future.
   *
   * <p>The valid values are:
   *
   * <ul>
   *   <li>{@code null} initial state, nothing has happened.
   *   <li>{@link Cancellation} terminal state, {@code cancel} was called.
   *   <li>{@link Failure} terminal state, {@code setException} was called.

   * won't cause a rehash.
   *
   * <p>As of jdk7u40, HashMap has an empty-map optimization. The argument to new HashMap(int) is
   * noted, but the initial table is a zero-length array.
   *
   * <p>This test may fail miserably on non-OpenJDK environments...
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection

</p>

<p>
The <code>GLOBL</code> directive declares a symbol to be global.
The arguments are optional flags and the size of the data being declared as a global,
which will have initial value all zeros unless a <code>DATA</code> directive
has initialized it.
The <code>GLOBL</code> directive must follow any corresponding <code>DATA</code> directives.
</p>

<p>
For example,
</p>

<pre>

* ✨ Add additional OpenAPI metadata parameters to `FastAPI` class, shown on the automatic API docs UI. New docs: [Metadata and Docs URLs](https://fastapi.tiangolo.com/tutorial/metadata/). Initial PR [#1812](https://github.com/tiangolo/fastapi/pull/1812) by [@dkreeft](https://github.com/dkreeft)....

     */
    protected abstract void doConnect() throws Exception;

    /*
     * Tear down a connection. If the hard parameter is true, the diconnection
     * procedure should not initiate or wait for any outstanding requests on
     * this transport.
     */

    /**
     * Disconnect the transport connection
     *