}
        outI++;
      }
      return outI == n ? hashTable : new Object[] {hashTable, outI, duplicateKey};
    }
  }

  static @Nullable Object createHashTableOrThrow(
      @Nullable Object[] alternatingKeysAndValues, int n, int tableSize, int keyOffset) {
    Object hashTablePlus = createHashTable(alternatingKeysAndValues, n, tableSize, keyOffset);