Returns an array of key paths representing the restorable attributes of the document.
- macOS 10.7+
An array of
NSString objects, each of which contains a key path to one of the document’s attributes.
You can use this method instead of, or in addition to, the
restore methods to save and restore the state of your document. The key paths must refer to attributes that are Key-value coding and Key-value observing compliant.
When changes are detected, the specified attributes are automatically written to disk with the rest of the app’s interface-related state. At launch time, the attributes are automatically restored to their previous values.