* </ol>
     * <p>
     * However, if both the class loader that loaded the target class and the class loader that loaded this class can be obtained,
     * and the class loader that loaded the target class is an ancestor of the class loader that loaded this class,
     * the class loader that loaded this class is returned.
     * </p>
     *

        assertArgumentNotNull("loader", loader);

        if (path == null || loader == null) {
            return null;
        }
        final String p = getResourcePath(path, extension);
        return loader.getResource(p);
    }

    /**
     * Returns the resource as a stream from the context class loader.
     *
     * @param path

  private final CacheLoader<? super K, V> loader;
  private final RemovalListener<? super K, ? super V> removalListener;
  private final StatsCounter statsCounter;
  private final Ticker ticker;
  private final long expireAfterWrite;
  private final long expireAfterAccess;

  LocalCache(CacheBuilder<? super K, ? super V> builder, CacheLoader<? super K, V> loader) {
    this.loader = loader;
    this.removalListener = builder.removalListener;

 * overridden as desired.
 *
 * <p>Usage example:
 *
 * {@snippet :
 * CacheLoader<Key, Graph> loader = new CacheLoader<Key, Graph>() {
 *   public Graph load(Key key) throws AnyException {
 *     return createExpensiveGraph(key);
 *   }
 * };
 * LoadingCache<Key, Graph> cache = CacheBuilder.newBuilder().build(loader);
 * }
 *

   * {@linkplain Thread#getContextClassLoader() context class loader}. In simple environments, the
   * context class loader will find resources from the class path. In environments where different
   * threads can have different class loaders, for example app servers, the context class loader
   * will typically have been set to an appropriate loader for the current thread.
   *

    }
  }

  /**
   * On a concurrent computation that returns null, all threads should get an
   * InvalidCacheLoadException, with the loader only called once. The result should not be cached (a
   * later request should call the loader again).
   */
  private static void testConcurrentLoadingNull(CacheBuilder<Object, Object> builder)
      throws InterruptedException {

    int count = 10;

/**
 * An {@link Iterator} that iterates through the hierarchy of class loaders towards their parent class loaders.
 * <p>
 * Usage example:
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.lang.ClassLoaderIterator.*;
 *
 * ClassLoader classLoader = ...;
 * for (ClassLoader loader : iterable(classLoader)) {
 *     ...
 * }
 * </pre>
 *
 * @author koichik
 */

    CountingLoader loader = new CountingLoader();
    LocalCache<Object, Object> map = makeLocalCache(createCacheBuilder());
    assertEquals(0, loader.getCount());

    Object key = new Object();
    Object value = map.get(key, loader);
    assertEquals(1, loader.getCount());
    assertEquals(value, map.get(key, loader));
    assertEquals(1, loader.getCount());
  }

    WatchedCreatorLoader loader = new WatchedCreatorLoader();
    LoadingCache<String, Integer> cache =
        CacheBuilder.newBuilder()
            .expireAfterWrite(EXPIRING_TIME, MILLISECONDS)
            .removalListener(removalListener)
            .ticker(ticker)
            .build(loader);
    checkExpiration(cache, loader, ticker, removalListener);
  }

            return new Object();
          }
        };
    LocalLoadingCache<Object, Object> cache = makeCache(createCacheBuilder(), loader);
    assertSame(loader, cache.localCache.defaultLoader);
  }

  // null parameters test

  public void testNullParameters() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    CacheLoader<Object, Object> loader = identityLoader();