*
   * ```
   *    180C; ; Map to nothing
   *    0041; 0061; Case map
   *    0390; 03B9 0308 0301; Case map
   * ```
   *
   * Each line maps from a single hexadecimal code point to zero or more hexadecimal code points.
   * Elements are delimited by semicolons with a comment at the end of the line.
   */
  fun readCodePointMapping(path: Path): MappingListCodePointMapping {