import java.util.List;
import java.util.Random;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link Files}.
 *
 * <p>Some methods are tested in separate files:
 *
 * <ul>
 *   <li>{@link Files#fileTraverser()} is tested in {@link FilesFileTraverserTest}.
 *   <li>{@link Files#createTempDir()} is tested in {@link FilesCreateTempDirTest}.
 * </ul>
 *

            ClosingFunction<? super V, U> transformation, @ParametricNullness V input)
            throws Exception {
      // TODO(dpb): Consider ways to defer closing without creating a separate CloseableList.
      CloseableList newCloseables = new CloseableList();
      try {
        return immediateFuture(transformation.apply(newCloseables.closer, input));
      } finally {

        }
        load();
    }

    /**
     * Updates the processor configuration by reloading available searchers.
     * This method executes the load operation asynchronously in a separate thread.
     */
    public void update() {
        CommonPoolUtil.execute(this::load);
    }

    /**
     * Loads the available searcher names from system properties.

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      Function<? super V, T> function, Executor executor) {
    return (FluentFuture<T>) Futures.transform(this, function, executor);
  }

  /**
   * Registers separate success and failure callbacks to be run when this {@code Future}'s
   * computation is {@linkplain java.util.concurrent.Future#isDone() complete} or, if the
   * computation is already complete, immediately.
   *

        });

        // Set up test data service to return empty results
        ((TestDataService) dataService).setAccessResultList(new TestOpenSearchResultList());

        // Start indexer in separate thread
        indexUpdater.start();

        // Let it run briefly
        ThreadUtil.sleep(100);

        // Stop the indexer
        indexUpdater.setFinishCrawling(true);

     */
    assertTrue(
        "Expected elapsed millis to be >= " + expectedMillis + " but was " + elapsedMillis,
        elapsedMillis + 5 >= expectedMillis);
  }

  // TODO(cpovirk): Split this into separate CountDownLatch and IncrementableCountDownLatch classes.

  /** Manages a {@link BlockingQueue} and associated timings for a {@code put} call. */
  private static final class TimedPutQueue {

   *
   * if (guardExpression) {
   *    throw new BadException(messageExpression);
   * }
   *
   * refactored so that messageExpression is moved to a separate String-returning method.
   *
   * if (guardExpression) {
   *    throw new BadException(badMsg(...));
   * }
   *

   */
  @Override
  public boolean equals(@Nullable Object object) {
    return super.equals(object);
  }

  // Static converters

  /**
   * Returns a converter based on separate forward and backward functions. This is useful if the
   * function instances already exist, or so that you can supply lambda expressions. If those

          if (toCancel != null) {
            toCancel.cancel(shouldInterrupt);
          }
        }
      }
    }
  }

  /**
   * Registers separate success and failure callbacks to be run when the {@code Future}'s
   * computation is {@linkplain java.util.concurrent.Future#isDone() complete} or, if the
   * computation is already complete, immediately.
   *