builder.append("\tat ").append(trace).append('\n');
      }
      fail(builder.toString());
    }
  }

  /**
   * Returns an iterable containing all combinations of maximumSize, expireAfterAccess/Write,
   * weakKeys and weak/softValues.
   */
  private static Iterable<CacheBuilder<Object, Object>> allEntryTypeMakers() {

 * automatic-closing approach described above is safer.
 *
 * @param <V> the type of the value of this step
 * @since 30.0
 */
// TODO(dpb): Consider reusing one CloseableList for the entire pipeline, modulo combinations.
@DoNotMock("Use ClosingFuture.from(Futures.immediate*Future)")
@J2ktIncompatible
@GwtIncompatible // TODO(dpb): GWT compatibility.
public final class ClosingFuture<V extends @Nullable Object> {

 * automatic-closing approach described above is safer.
 *
 * @param <V> the type of the value of this step
 * @since 30.0
 */
// TODO(dpb): Consider reusing one CloseableList for the entire pipeline, modulo combinations.
@DoNotMock("Use ClosingFuture.from(Futures.immediate*Future)")
@J2ktIncompatible
@GwtIncompatible // TODO(dpb): GWT compatibility.
public final class ClosingFuture<V extends @Nullable Object> {

     * {@code shareAccess} parameter controls what permissions other
     * clients have when trying to access the same file while this instance
     * is still open. This value is either {@code FILE_NO_SHARE} or any
     * combination of {@code FILE_SHARE_READ}, {@code FILE_SHARE_WRITE},
     * and {@code FILE_SHARE_DELETE} logically OR'd together.
     *
     * @param   url A URL string