throw new IllegalArgumentException(lenientFormat(errorMessageTemplate, p1, p2, p3, p4));
    }
  }

  /**
   * Ensures the truth of an expression involving the state of the calling instance, but not
   * involving any parameters to the calling method.
   *
   * @param expression a boolean expression
   * @throws IllegalStateException if {@code expression} is false
   * @see Verify#verify Verify.verify()
   */

   * RuntimeException}, {@link Error}, or {@code declaredType}.
   *
   * <p><b>Discouraged</b> in favor of calling {@link #throwIfInstanceOf} and {@link
   * #throwIfUnchecked}.
   *
   * @param throwable the Throwable to possibly propagate
   * @param declaredType the single checked exception type declared by the calling method
   * @deprecated Use a combination of {@link #throwIfInstanceOf} and {@link #throwIfUnchecked},

   * RuntimeException}, {@link Error}, or {@code declaredType}.
   *
   * <p><b>Discouraged</b> in favor of calling {@link #throwIfInstanceOf} and {@link
   * #throwIfUnchecked}.
   *
   * @param throwable the Throwable to possibly propagate
   * @param declaredType the single checked exception type declared by the calling method
   * @deprecated Use a combination of {@link #throwIfInstanceOf} and {@link #throwIfUnchecked},

      int j = findNextJ();
      if (j == -1) {
        nextPermutation = null;
        return;
      }
      /*
       * requireNonNull is safe because we don't clear nextPermutation until we're done calling this
       * method.
       */
      requireNonNull(nextPermutation);

      int l = findNextL(j);
      Collections.swap(nextPermutation, j, l);
      int n = nextPermutation.size();

  private DiscreteDomain(boolean supportsFastOffset) {
    this.supportsFastOffset = supportsFastOffset;
  }

  /**
   * Returns, conceptually, "origin + distance", or equivalently, the result of calling {@link
   * #next} on {@code origin} {@code distance} times.
   */
  C offset(C origin, long distance) {
    C current = origin;
    checkNonnegative(distance, "distance");
    for (long i = 0; i < distance; i++) {

    List<Object> result = doConcurrentGet(cache, "bar", count, startSignal);

    assertEquals(1, callCount.get());
    for (int i = 0; i < count; i++) {
      // doConcurrentGet alternates between calling getUnchecked and calling get, but an unchecked
      // exception thrown by the loader is always wrapped as an UncheckedExecutionException.
      assertThat(result.get(i)).isInstanceOf(UncheckedExecutionException.class);

    }

    private static final long serialVersionUID = 0;
  }

  /**
   * Returns a supplier whose {@code get()} method synchronizes on {@code delegate} before calling
   * it, making it thread-safe.
   */
  public static <T extends @Nullable Object> Supplier<T> synchronizedSupplier(
      Supplier<T> delegate) {
    return new ThreadSafeSupplier<>(delegate);
  }

   * interrupted.
   *
   * Imagine a monitor with multiple guards. A thread enters the monitor, satisfies all the guards,
   * and leaves, calling signalNextWaiter. With traditional locks and conditions, all the conditions
   * need to be signalled because it is not known which if any of them have waiters (and hasWaiters

    assertFalse(service.isRunning());
    assertFalse(service.doStopCalled);
  }

  /**
   * The user of this service should call {@link #notifyStarted} and {@link #notifyStopped} after
   * calling {@link #startAsync} and {@link #stopAsync}.
   */
  private static class ManualSwitchedService extends AbstractService {
    boolean doStartCalled = false;
    boolean doStopCalled = false;

    @Override

     *
     * (In addition to useForNull, we also offer skipNulls. It, too, tolerates null inputs, but its
     * tolerance is implemented differently: Its implementation avoids calling this toString(Object)
     * method in the first place.)
     */
    requireNonNull(part);
    return (part instanceof CharSequence) ? (CharSequence) part : part.toString();
  }