return of();
      }
      if (valueComparator != null) {
        if (entriesUsed) {
          alternatingKeysAndValues = Arrays.copyOf(alternatingKeysAndValues, 2 * size);
        }
        sortEntries(alternatingKeysAndValues, size, valueComparator);
      }
      entriesUsed = true;
      return new RegularImmutableBiMap<K, V>(alternatingKeysAndValues, size);
    }

    /**

          if (localAlternatingKeysAndValues.length < alternatingKeysAndValues.length) {
            localSize = localAlternatingKeysAndValues.length >>> 1;
          }
        }
        sortEntries(localAlternatingKeysAndValues, localSize, valueComparator);
      }
      entriesUsed = true;
      ImmutableMap<K, V> map =
          RegularImmutableMap.create(localSize, localAlternatingKeysAndValues, this);