code: @Deprecated
      public char elementAt(char index)
      {
      int ix = (indices[index >> BLOCKSHIFT] & 0xFFFF)
          + (index & BLOCKMASK);
      return ix >= values.length ? defaultValue : values[ix];
      }
docs: Get the mapped value of a Unicode character.
  @param index the character to get the mapped value with
  @return the mapped value of the given character
  @deprecated This API is ICU internal only.
  @hide draft / provisional / internal are hidden on Android