Construct a new observable outputs instance.
Private _changePrivate _changedPrivate _isPrivate _mapPrivate _serializedPrivate _stateReadonly contentThe attachment content factory used by the model.
A signal emitted when the model changes.
Test whether the model is disposed.
The keys of the attachments in the model.
Get the length of the items in the model.
A signal emitted when the model state changes.
Private _createCreate an attachment item and hook up its signals.
Private _onPrivate _onHandle a change to the list.
Get an item at the specified key.
Set the value at the specified key.
Serialize the model to JSON.
The default implementation of the IAttachmentsModel.