Method group

src/Deferred.java:892–895

Groups multiple Deferreds together in a single one. Conceptually, this does the opposite of #chain, in the sense that it demultiplexes multiple Deferreds into a single one, so that you can easily take an action once all the Deferreds in the group have been called

(final Collection<Deferred<T>> deferreds)

   * {@link #groupInOrder(Collection)} instead.
   */
  public static <T>
    Deferred<ArrayList<T>> group(final Collection<Deferred<T>> deferreds) {
    return new DeferredGroup<T>(deferreds, false).getDeferred();
  }

  /**
   * Groups multiple {@code Deferred}s together in a single one.