if (keyComparator != null) {
        mapEntries = Ordering.from(keyComparator).<K>onKeys().immutableSortedCopy(mapEntries);
      }
      return ImmutableListMultimap.fromMapBuilderEntries(mapEntries, valueComparator);
    }
  }

  /**
   * Returns an immutable multimap containing the same mappings as {@code multimap}, in the