Dart APIunself_modelArchiveSchemaPartread read method Null safety ArchiveData read(Map<String, dynamic> json ) Implementation ArchiveData read(Map<String, dynamic> json) { throw UnimplementedError(); } unself_model unself_model ArchiveSchemaPart read method ArchiveSchemaPart class Constructors fromJson json zipJson Properties copyWith extra hashCode id part runtimeType schema Methods map mapOrNull maybeMap maybeWhen noSuchMethod read toJson toString when whenOrNull Operators operator ==