throws IOException, ServletException {
        final RequestManager requestManager = ComponentUtil.getRequestManager();
        if (!requestManager.findUserBean(FessUserBean.class).map(user -> user.hasRoles(acceptedRoles)).orElse(Boolean.FALSE)) {
            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized access: " + request.getServletPath());
            return;
        }

        try {

     * that could call it, nor exposed this Future for users to call cancel() on).
     */
    requireNonNull(futures);

    // Corner case: List is empty.
    if (futures.isEmpty()) {
      handleAllCompleted();
      return;
    }

    // NOTE: If we ever want to use a custom executor here, have a look at CombinedFuture as we'll
    // need to handle RejectedExecutionException

 * and request tracing capabilities.
 *
 * <p>Each request is associated with a {@link ProtoSession} that contains the configuration
 * and context necessary for request processing, including:
 * <ul>
 *   <li>User and system properties for interpolation</li>
 *   <li>Session start time information</li>
 *   <li>Project directory structures</li>
 * </ul>
 *

 * such as those associated with files and directories. The Windows OS
 * determines which users have the necessary permissions to access objects
 * based on these entries.
 * <p>
 * To fully understand the information exposed by this class a description
 * of the access check algorithm used by Windows is required. The following
 * is a basic description of the algorithm. For a more complete description

 * small portion of these would be in use.
 *
 * <p>Prior to this class, one might be tempted to use {@code Map<K, Lock>}, where {@code K}
 * represents the task. This maximizes concurrency by having each unique key mapped to a unique
 * lock, but also maximizes memory footprint. On the other extreme, one could use a single lock for

 .float-xl-none {\n    float: none !important;\n  }\n}\n\n.user-select-all {\n  -webkit-user-select: all !important;\n  -moz-user-select: all !important;\n  user-select: all !important;\n}\n\n.user-select-auto {\n  -webkit-user-select: auto !important;\n  -moz-user-select: auto !important;\n  -ms-user-select: auto !important;\n  user-select: auto !important;\n}\n\n.user-select-none {\n  -webkit-user-select: none !important;\n  -moz-user-select: none !important;\n  -ms-user-select: none !important;\n...

     * though it's racy, we don't care which of those values we get, so no need to synchronize.
     */
    @LazyInit @Nullable Thread thread;

    /** Only used by the thread associated with this object */
    @Nullable Runnable nextTask;

    /** Only used by the thread associated with this object */
    @Nullable Executor nextExecutor;
  }

  /**
   * Enqueues a task to run when the previous task (if any) completes.

bandwidth limits set via `mc admin bucket remote add` could also contribute to replication speed. The number of workers used for replication defaults to 100. Based on network bandwidth and system load, the number of workers used in replication can be configured using `mc admin config set alias api` to set the `replication_workers`. The prometheus metrics exposed by MinIO can be used to plan resource allocation and bandwidth management to optimize replication speed.

If synchronous replication...

// Excerpts from @lsegal - https://github.com/aws/aws-sdk-js/issues/659#issuecomment-120477258
//
//	User-Agent:
//
//	    This is ignored from signing because signing this causes problems with generating pre-signed URLs
//	    (that are executed by other agents) or when customers pass requests through proxies, which may
//	    modify the user-agent.
//
//	Authorization:
//
//	    Is skipped for obvious reasons

                String user = index != -1 ? auth.substring(0, index) : auth;
                final String password = index != -1 ? auth.substring(index + 1) : "";
                index = user.indexOf('\\');
                if (index == -1) {
                    index = user.indexOf('/');
                }
                final String domain = index != -1 ? user.substring(0, index) : this.defaultDomain;