*   <li>If no exceptions or errors were thrown in the try block, the <i>first</i> exception thrown
 *       by an attempt to close a resource will be thrown.
 *   <li>Any exception caught when attempting to close a resource that is <i>not</i> thrown (because
 *       another exception is already being thrown) is <i>suppressed</i>.
 * </ul>
 *
 * <p>An exception that is suppressed is added to the exception that <i>will</i> be thrown using

 *   <li>If no exceptions or errors were thrown in the try block, the <i>first</i> exception thrown
 *       by an attempt to close a resource will be thrown.
 *   <li>Any exception caught when attempting to close a resource that is <i>not</i> thrown (because
 *       another exception is already being thrown) is <i>suppressed</i>.
 * </ul>
 *
 * <p>An exception that is suppressed is added to the exception that <i>will</i> be thrown using

      this.closeable = closeable;
      this.thrown = thrown;
      this.suppressed = suppressed;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof Suppression) {
        Suppression other = (Suppression) obj;
        return closeable.equals(other.closeable)
            && thrown.equals(other.thrown)

      this.closeable = closeable;
      this.thrown = thrown;
      this.suppressed = suppressed;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof Suppression) {
        Suppression other = (Suppression) obj;
        return closeable.equals(other.closeable)
            && thrown.equals(other.thrown)

    SomeCheckedException cause = new SomeCheckedException();
    SomeChainingException thrown = new SomeChainingException(cause);

    assertThat(thrown).hasCauseThat().isSameInstanceAs(cause);
    assertThat(getCauseAs(thrown, SomeCheckedException.class)).isSameInstanceAs(cause);
    assertThat(getCauseAs(thrown, Exception.class)).isSameInstanceAs(cause);

    ClassCastException expected =
        assertThrows(

    SomeCheckedException cause = new SomeCheckedException();
    SomeChainingException thrown = new SomeChainingException(cause);

    assertThat(thrown).hasCauseThat().isSameInstanceAs(cause);
    assertThat(getCauseAs(thrown, SomeCheckedException.class)).isSameInstanceAs(cause);
    assertThat(getCauseAs(thrown, Exception.class)).isSameInstanceAs(cause);

    ClassCastException expected =
        assertThrows(

    }
    return exceptions;
  }

  /**
   * Throws an exception indicating that one or more files couldn't be deleted when deleting {@code
   * path} or its contents.
   *
   * <p>If there is only one exception in the collection, and it is a {@link NoSuchFileException}
   * thrown because {@code path} itself didn't exist, then throws that exception. Otherwise, the

    }
    return exceptions;
  }

  /**
   * Throws an exception indicating that one or more files couldn't be deleted when deleting {@code
   * path} or its contents.
   *
   * <p>If there is only one exception in the collection, and it is a {@link NoSuchFileException}
   * thrown because {@code path} itself didn't exist, then throws that exception. Otherwise, the

    for (Thread t : threads) {
      t.join();
    }

    if (thrown.get() != null) {
      throw thrown.get();
    }
    assertEquals(1, count.get());
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread
  @SuppressWarnings("ThreadPriorityCheck") // doing our best to test for races
  public void testSynchronizedSupplierThreadSafe() throws InterruptedException {
    final Supplier<Integer> nonThreadSafe =

    for (Thread t : threads) {
      t.join();
    }

    if (thrown.get() != null) {
      throw thrown.get();
    }
    assertEquals(1, count.get());
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread
  @SuppressWarnings("ThreadPriorityCheck") // doing our best to test for races
  public void testSynchronizedSupplierThreadSafe() throws InterruptedException {
    final Supplier<Integer> nonThreadSafe =