if (alphaIndex < 26 && alphaIndex == getAlphaIndex(c2)) {
        continue;
      }
      return false;
    }
    return true;
  }

  /**
   * Returns the non-negative index value of the alpha character {@code c}, regardless of case. Ie,
   * 'a'/'A' returns 0 and 'z'/'Z' returns 25. Non-alpha characters return a value of 26 or greater.
   */

          .put(84, 0x3e2e58f9196abfe5L)
          .put(67, 0xd38ae3dec0107aeaL)
          .put(53, 0xea3033885868e10eL)
          .put(42, 0x1394a146d0d7e04bL)
          .put(33, 0x9962499315d2e8daL)
          .put(26, 0x0849f5cfa85489b5L)
          .put(20, 0x83b395ff19bf2171L)
          .put(16, 0x9d33dd141bd55d9aL)
          .put(12, 0x196248eb0b02466aL)
          .put(9, 0x1cf73a50ff120336L)
          .put(7, 0xb451c339457dbf51L)

          .put(84, 0x3e2e58f9196abfe5L)
          .put(67, 0xd38ae3dec0107aeaL)
          .put(53, 0xea3033885868e10eL)
          .put(42, 0x1394a146d0d7e04bL)
          .put(33, 0x9962499315d2e8daL)
          .put(26, 0x0849f5cfa85489b5L)
          .put(20, 0x83b395ff19bf2171L)
          .put(16, 0x9d33dd141bd55d9aL)
          .put(12, 0x196248eb0b02466aL)
          .put(9, 0x1cf73a50ff120336L)
          .put(7, 0xb451c339457dbf51L)

    assertEquals(8, Utf8.encodedLength("Résumé"));
    assertEquals(
        461,
        Utf8.encodedLength(
            "威廉·莎士比亞（William Shakespeare，"
                + "1564年4月26號—1616年4月23號[1]）係隻英國嗰演員、劇作家同詩人，"
                + "有時間佢簡稱莎翁；中國清末民初哈拕翻譯做舌克斯毕、沙斯皮耳、筛斯比耳、"
                + "莎基斯庇尔、索士比尔、夏克思芘尔、希哀苦皮阿、叶斯壁、沙克皮尔、"
                + "狹斯丕爾。[2]莎士比亞編寫過好多作品，佢嗰劇作響西洋文學好有影響，"
                + "哈都拕人翻譯做好多話。"));

      if (alphaIndex < 26 && alphaIndex == getAlphaIndex(c2)) {
        continue;
      }
      return false;
    }
    return true;
  }

  /**
   * Returns the non-negative index value of the alpha character {@code c}, regardless of case. Ie,
   * 'a'/'A' returns 0 and 'z'/'Z' returns 25. Non-alpha characters return a value of 26 or greater.
   */

  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {
    return "z";
  }

  @Override
  protected String getValueNotInPopulatedMap() throws UnsupportedOperationException {
    return "26";
  }

  /** Helper assertion comparing two maps */
  private void assertMapsEqual(Map<?, ?> expected, Map<?, ?> map) {
    assertEquals(expected, map);
    assertEquals(expected.hashCode(), map.hashCode());

  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {
    return "z";
  }

  @Override
  protected String getValueNotInPopulatedMap() throws UnsupportedOperationException {
    return "26";
  }

  /** Helper assertion comparing two maps */
  private void assertMapsEqual(Map<?, ?> expected, Map<?, ?> map) {
    assertEquals(expected, map);
    assertEquals(expected.hashCode(), map.hashCode());

       *
       * A note on exception types:
       *
       * Android API level 10 throws ExceptionInInitializerError the first time and
       * ClassNotFoundException thereafter.
       *
       * Android API level 26 and JVM8 both let our Error propagate directly the first time and
       * throw NoClassDefFoundError thereafter. This is the proper behavior according to the spec.

  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {
    return "z";
  }

  @Override
  protected String getValueNotInPopulatedMap() throws UnsupportedOperationException {
    return "26";
  }

  /** Helper assertion comparing two maps */
  private void assertMapsEqual(Map<?, ?> expected, Map<?, ?> map) {
    assertEquals(expected, map);
    assertEquals(expected.hashCode(), map.hashCode());

  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {
    return "z";
  }

  @Override
  protected String getValueNotInPopulatedMap() throws UnsupportedOperationException {
    return "26";
  }

  /** Helper assertion comparing two maps */
  private void assertMapsEqual(Map<?, ?> expected, Map<?, ?> map) {
    assertEquals(expected, map);
    assertEquals(expected.hashCode(), map.hashCode());