AnchorField.fromJson constructor Null safety
Implementation
factory AnchorField.fromJson(Map<String, dynamic> json) => AnchorField(json['description'],
json['optional'], json['choices'] == null ? null : List<String>.from(json['choices']));
factory AnchorField.fromJson(Map<String, dynamic> json) => AnchorField(json['description'],
json['optional'], json['choices'] == null ? null : List<String>.from(json['choices']));