public void testCheckNotNull_simple_success() {
    String result = checkNotNull(NON_NULL_STRING);
    assertThat(result).isSameInstanceAs(NON_NULL_STRING);
  }

  public void testCheckNotNull_simple_failure() {
    assertThrows(NullPointerException.class, () -> checkNotNull(null));
  }

  public void testCheckNotNull_simpleMessage_success() {
    String result = checkNotNull(NON_NULL_STRING, IGNORE_ME);

      unit: TimeUnit,
    ): T? {
      return taskRunner.withLock {
        val waitUntil = nanoTime + unit.toNanos(timeout)
        while (true) {
          val result = poll()
          if (result != null) return@withLock result
          if (nanoTime >= waitUntil) return@withLock null
          val editCountBefore = editCount
          yieldUntil { nanoTime >= waitUntil || editCount > editCountBefore }
        }

   *
   * <p>Among the improvements that this method and {@code LoadingCache.get(K)} both provide are:
   *
   * <ul>
   *   <li>{@linkplain LoadingCache#get(Object) awaiting the result of a pending load} rather than
   *       starting a redundant one
   *   <li>eliminating the error-prone caching boilerplate
   *   <li>tracking load {@linkplain #stats statistics}
   * </ul>
   *

                .iterator();
    Iterator<Integer> result = Iterators.concat(input);
    assertEquals(1, (int) result.next());
    assertEquals(2, (int) result.next());
    assertThrows(NullPointerException.class, () -> result.hasNext());
    assertThrows(NullPointerException.class, () -> result.next());
    // There is no way to get "through" to the 3.  Buh-bye
  }

    long remainingNanos = unit.toNanos(timeout);
    long end = System.nanoTime() + remainingNanos;

    try {
      boolean result = condition.await(remainingNanos, NANOSECONDS);
      if (wasAlreadyInterrupted) {
        Thread.currentThread().interrupt();
      }
      return result;
    } catch (InterruptedException e) {
      Thread.currentThread().interrupt();

    final Chopper or(Chopper you) {
      Chopper i = this;
      return new Chopper() {
        @Override
        @Nullable String chop(String str) {
          String result = i.chop(str);
          return result != null ? result : you.chop(str);
        }
      };
    }

    abstract @Nullable String chop(String str);

    static Chopper suffix(String suffix) {
      return new Chopper() {

    }
  }

  /**
   * Verifies that a collection is immutable.
   *
   * <p>A collection is considered immutable if:
   *
   * <ol>
   *   <li>All its mutation methods result in UnsupportedOperationException, and do not change the
   *       underlying contents.
   *   <li>All methods that return objects that can indirectly mutate the collection throw

            // current `targetCompatibility` version.
            // Each extract will overwrite the top level classes that existed before it, the result is that we end up
            // with a single version of the class in `jarExpandDir`.
            // This will be the closes version to `targetCompatibility`, the same class that would be loaded in a JVM

Если вы используете сторонние библиотеки, которые нужно вызывать с `await`, например:

```Python
results = await some_library()
```

Тогда объявляйте *функции-обработчиков пути* с `async def`, например:

```Python hl_lines="2"
@app.get('/')
async def read_results():
    results = await some_library()
    return results
```

/// note | Примечание

            }
            throw new CircuitBreakerOpenException("Circuit breaker " + name + " is open");
        }

        try {
            T result = callable.call();
            onSuccess();
            return result;
        } catch (Exception e) {
            onFailure();
            throw e;
        }
    }

    /**
     * Execute a runnable through the circuit breaker