String convert(List<int> codeUnits, [ int start = 0, int end ])

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. If end is omitted, it defaults to codeUnits.length.

If the codeUnits start with a leading UNICODE_BOM_CHARACTER_RUNE this character is discarded.

Source 

String convert(List<int> codeUnits, [int start = 0, int end]) {
  // Allow the implementation to intercept and specialize based on the type
  // of codeUnits.
  String result = _convertIntercepted(_allowMalformed, codeUnits, start, end);
  if (result != null) {
    return result;
  }

  int length = codeUnits.length;
  RangeError.checkValidRange(start, end, length);
  if (end == null) end = length;
  StringBuffer buffer = new StringBuffer();
  _Utf8Decoder decoder = new _Utf8Decoder(buffer, _allowMalformed);
  decoder.convert(codeUnits, start, end);
  decoder.flush(codeUnits, end);
  return buffer.toString();
}