DateSymbols.deserializeFromMap constructor Null safety

Implementation

DateSymbols.deserializeFromMap(Map<dynamic, dynamic> map) {
  List<String> _getStringList(String name) => List<String>.from(map[name]);
  NAME = map['NAME'];
  ERAS = _getStringList('ERAS');
  ERANAMES = _getStringList('ERANAMES');
  NARROWMONTHS = _getStringList('NARROWMONTHS');
  STANDALONENARROWMONTHS = _getStringList('STANDALONENARROWMONTHS');
  MONTHS = _getStringList('MONTHS');
  STANDALONEMONTHS = _getStringList('STANDALONEMONTHS');
  SHORTMONTHS = _getStringList('SHORTMONTHS');
  STANDALONESHORTMONTHS = _getStringList('STANDALONESHORTMONTHS');
  WEEKDAYS = _getStringList('WEEKDAYS');
  STANDALONEWEEKDAYS = _getStringList('STANDALONEWEEKDAYS');
  SHORTWEEKDAYS = _getStringList('SHORTWEEKDAYS');
  STANDALONESHORTWEEKDAYS = _getStringList('STANDALONESHORTWEEKDAYS');
  NARROWWEEKDAYS = _getStringList('NARROWWEEKDAYS');
  STANDALONENARROWWEEKDAYS = _getStringList('STANDALONENARROWWEEKDAYS');
  SHORTQUARTERS = _getStringList('SHORTQUARTERS');
  QUARTERS = _getStringList('QUARTERS');
  AMPMS = _getStringList('AMPMS');
  ZERODIGIT = map['ZERODIGIT'];
  DATEFORMATS = _getStringList('DATEFORMATS');
  TIMEFORMATS = _getStringList('TIMEFORMATS');
  AVAILABLEFORMATS = Map<String, String>.from(map['AVAILABLEFORMATS'] ?? {});
  FIRSTDAYOFWEEK = map['FIRSTDAYOFWEEK'];
  WEEKENDRANGE = List<int>.from(map['WEEKENDRANGE']);
  FIRSTWEEKCUTOFFDAY = map['FIRSTWEEKCUTOFFDAY'];
  DATETIMEFORMATS = _getStringList('DATETIMEFORMATS');
}