assertInterrupted();
  }

  // Semaphore.tryAcquire() tests
  public void testTryAcquireWithNoWait() {
    Stopwatch stopwatch = Stopwatch.createStarted();
    Semaphore semaphore = new Semaphore(99);
    assertTrue(tryAcquireUninterruptibly(semaphore, 0, MILLISECONDS));
    assertTrue(tryAcquireUninterruptibly(semaphore, -42, MILLISECONDS));
    assertTrue(tryAcquireUninterruptibly(semaphore, LONG_DELAY_MS, MILLISECONDS));

    assertInterrupted();
  }

  // Semaphore.tryAcquire() tests
  public void testTryAcquireWithNoWait() {
    Stopwatch stopwatch = Stopwatch.createStarted();
    Semaphore semaphore = new Semaphore(99);
    assertTrue(tryAcquireUninterruptibly(semaphore, 0, MILLISECONDS));
    assertTrue(tryAcquireUninterruptibly(semaphore, -42, MILLISECONDS));
    assertTrue(tryAcquireUninterruptibly(semaphore, LONG_DELAY_MS, MILLISECONDS));

  @IgnoreJRERequirement // Users will use this only if they're already using Duration.
  public static boolean tryAcquireUninterruptibly(Semaphore semaphore, Duration timeout) {
    return tryAcquireUninterruptibly(semaphore, toNanosSaturated(timeout), NANOSECONDS);
  }

  /**
   * Invokes {@code semaphore.}{@link Semaphore#tryAcquire(int, long, TimeUnit) tryAcquire(1,
   * timeout, unit)} uninterruptibly.
   *
   * @since 18.0
   */

        Striped.custom(100, FAIR_LOCK_SUPPLER),
        Striped.custom(256, FAIR_LOCK_SUPPLER),
        Striped.semaphore(100, 1),
        Striped.semaphore(256, 1));
  }

  private static final Supplier<Lock> FAIR_LOCK_SUPPLER = () -> new ReentrantLock(true);

  private static final Supplier<Semaphore> SEMAPHORE_SUPPLER = () -> new Semaphore(1, false);

  private static List<Striped<?>> weakImplementations() {

        Striped.custom(100, FAIR_LOCK_SUPPLER),
        Striped.custom(256, FAIR_LOCK_SUPPLER),
        Striped.semaphore(100, 1),
        Striped.semaphore(256, 1));
  }

  private static final Supplier<Lock> FAIR_LOCK_SUPPLER = () -> new ReentrantLock(true);

  private static final Supplier<Semaphore> SEMAPHORE_SUPPLER = () -> new Semaphore(1, false);

  private static List<Striped<?>> weakImplementations() {

    /** The scheduled task for periodic availability checks. */
    protected TimeoutTask availabilityCheckTask;

    /** Semaphore for limiting concurrent LLM requests. Initialized lazily in init(). */
    protected volatile Semaphore concurrencyLimiter;

    /** The system prompt for LLM interactions. */
    protected String systemPrompt;
    /** The prompt for detecting user intent. */

	importMap   map[string]map[string]string // import path → canonical import path
}

var listCache sync.Map // map[string]listImports, keyed by contextName

// listSem is a semaphore restricting concurrent invocations of 'go list'. 'go
// list' has its own internal concurrency, so we use a hard-coded constant (to
// allow the I/O-intensive phases of 'go list' to overlap) instead of scaling

 *
 * <p>Rate limiters are often used to restrict the rate at which some physical or logical resource
 * is accessed. This is in contrast to {@link java.util.concurrent.Semaphore} which restricts the
 * number of concurrent accesses instead of the rate (note though that concurrency and rate are
 * closely related, e.g. see <a href="http://en.wikipedia.org/wiki/Little%27s_law">Little's
 * Law</a>).
 *