Dart APIunself_modelRefRef.fromJson factory constructor Ref.fromJson constructor Null safety Ref.fromJson(Map<String, dynamic> json ) Implementation factory Ref.fromJson(Map<String, dynamic> json) = _$Ref.fromJson; unself_model unself_model Ref Ref.fromJson factory constructor Ref class Constructors Ref fromJson Properties copyWith hashCode name runtimeType Methods getScheme map mapOrNull maybeMap maybeWhen noSuchMethod toJson toString useId when whenOrNull Operators operator ==