Dart APIunself_modelArchiveDataid id property Null safety String id inherited id is unself unique identifier for the Archive. Implementation String get id => throw _privateConstructorUsedError; unself_model unself_model ArchiveData id property ArchiveData class Constructors ArchiveData fromJson Properties accounts activities apps archiveId copyWith extra hashCode id runtimeType topics Methods noSuchMethod toJson toString Operators operator == Constants fieldMap