Tuple2<int, int> lineAndColumn

Source 

@override
Tuple2<int, int> get lineAndColumn {
  // TODO(jcollins-g): implement lineAndColumn for explicit fields
  if (!_isLineNumberComputed) {
    _lineAndColumn = lineNumberCache.lineAndColumn(
        element.source.fullName, element.nameOffset);
  }
  return _lineAndColumn;
}