The associated uri for this notebook.
Note that most notebooks use the
file-scheme, which means they are files on disk. However, not all notebooks are
saved on disk and therefore the
scheme must be checked before trying to access the underlying file or siblings on disk.
The type of notebook.
The version number of this notebook (it will strictly increase after each change, including undo/redo).
true if there are unpersisted changes.
Is this notebook representing an untitled file which has not been saved yet.
true if the notebook has been closed. A closed notebook isn't synchronized anymore
and won't be re-used when the same resource is opened again.
Arbitrary metadata for this notebook. Can be anything but must be JSON-stringifyable.
The number of cells in the notebook.