code: @Beta
    public static <E> ImmutableMultiset<E> copyHighestCountFirst(Multiset<E> multiset) {
      Entry<E>[] entries = (Entry<E>[]) multiset.entrySet().toArray(new Entry[0]);
      Arrays.sort(entries, DecreasingCount.INSTANCE);
      return ImmutableMultiset.copyFromEntries(Arrays.asList(entries));
    }
docs: Returns a copy of {@code multiset} as an {@link ImmutableMultiset} whose iteration order is
  highest count first, with ties broken by the iteration order of the original multiset.
  
  @since 11.0