* {@code key}, simply waits for that thread to finish and returns its loaded value. Note that
   * multiple threads can concurrently load values for distinct keys.
   *
   * <p>Caches loaded by a {@link CacheLoader} will call {@link CacheLoader#load} to load new values
   * into the cache. Newly loaded values are added to the cache using {@code

    // sepLoader is the loader that we will use to load the parallel FinalizableReferenceQueue (FRQ)
    // and friends, and that we will eventually expect to see garbage-collected. The assumption
    // is that the ClassLoader of this test is a URLClassLoader, and that it loads FRQ itself
    // rather than delegating to a parent ClassLoader. If this assumption is violated the test will

	buckets     []string
}

// NewMetricsGroup creates a new MetricsGroup. To create a metrics group for
// metrics with a `bucket` dimension (label), use `NewBucketMetricsGroup`.
//
// The `loader` function loads metrics from the cache and the system.
func NewMetricsGroup(path collectorPath, descriptors []MetricDescriptor,
	loader MetricsLoaderFn,
) *MetricsGroup {
	mg := &MetricsGroup{
		CollectorPath: path,

      if (finalizer != null) {
        return finalizer;
      }
    }

    return null;
  }

  /** Loads Finalizer.class. */
  interface FinalizerLoader {

    /**
     * Returns a {@link Class} for {@link Finalizer} or {@code null} if this loader shouldn't or
     * can't load it.
     *
     * @throws SecurityException if we don't have the appropriate privileges
     */

        }
        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.

      if (finalizer != null) {
        return finalizer;
      }
    }

    return null;
  }

  /** Loads Finalizer.class. */
  interface FinalizerLoader {

    /**
     * Returns a {@link Class} for {@link Finalizer} or {@code null} if this loader shouldn't or
     * can't load it.
     *
     * @throws SecurityException if we don't have the appropriate privileges
     */

	if objAPI == nil {
		return errServerNotInitialized
	}

	sys.objAPI = objAPI

	// Load bucket metadata sys.
	sys.init(ctx, buckets)
	return nil
}

// concurrently load bucket metadata to speed up loading bucket metadata.
func (sys *BucketMetadataSys) concurrentLoad(ctx context.Context, buckets []string) {
	g := errgroup.WithNErrs(len(buckets))

				break
			}
		}
		mappedPolicy, ok := cache.iamUserPolicyMap.Load(name)
		if !ok {
			mappedPolicy, ok = cache.iamSTSPolicyMap.Load(name)
		}
		if !ok {
			// Attempt to load parent user mapping for STS accounts
			store.loadMappedPolicy(context.TODO(), name, stsUser, false, cache.iamSTSPolicyMap)
			mappedPolicy, ok = cache.iamSTSPolicyMap.Load(name)
			if !ok {
				return u, errNoSuchUser
			}
		}

	return readServerConfig(GlobalContext, objAPI, nil)
}

// loadConfig - loads a new config from disk, overrides params
// from env if found and valid
// data is optional. If nil it will be loaded from backend.
func loadConfig(objAPI ObjectLayer, data []byte) error {
	bootstrapTraceMsg("load the configuration")
	srvCfg, err := readServerConfig(GlobalContext, objAPI, data)
	if err != nil {
		return err

 * unloading an OSGi bundle.
 *
 * <p>{@code com.google.common.base.FinalizableReferenceQueue} loads this class in its own class
 * loader. That way, this class doesn't prevent the main class loader from getting garbage
 * collected, and this class can detect when the main class loader has been garbage collected and
 * stop itself.
 */