anchor.diff:    /// Converts the UTF-8 [codeUnits] (a list of unsigned 8-bit integers) to the
     /// corresponding string.
     ///
  -  /// Uses the code units from [start] to, but no including, [end].
  +  /// Uses the code units from [start] to, but not including, [end].
     /// If [end] is omitted, it defaults to `codeUnits.length`.
     ///
     /// If the [codeUnits] start with the encoding of a
  
positive.code: 
  /// This class converts strings to their UTF-8 code units (a list of
  /// unsigned 8-bit integers).
  class Utf8Encoder extends Converter<String, List<int>> {
    const Utf8Encoder();
  
  
negative.code:   /// If the [codeUnits] start with the encoding of a
    /// [unicodeBomCharacterRune], that character is discarded.
    ///
    /// If [allowMalformed] is `true`, the decoder replaces invalid (or
    /// unterminated) character sequences with the Unicode Replacement character
    /// `U+FFFD` (�). Otherwise it throws a [FormatException].
    ///
  