/// Represents arbitrary data, with an associated ID and timestamps.
class Model {
  /// A unique identifier corresponding to this item.
  String id;

  /// The time at which this item was created.
  DateTime createdAt;

  /// The last time at which this item was updated.
  DateTime updatedAt;

  Model({this.id, this.createdAt, this.updatedAt});

  /// Returns the [id], parsed as an [int].
  int get idAsInt => id == null ? null : int.tryParse(id);
}