code: @ReplacedBy("com.google.common.collect.Iterators#addAll(Collection, com.google.common.collect.Iterators#forEnumeration(Enumeration))")
      public static <T, C extends Collection<T>> C addAll (C col, Enumeration<? extends T> enm)
      {
          while (enm.hasMoreElements()) {
              col.add(enm.nextElement());
          }
          return col;
      }
docs: Adds all items returned by the enumeration to the supplied collection
  and returns the supplied collection.