A human-readable string describing the source of the timeline items. This can be used as the display label when filtering sources.
An optional event to signal that the timeline for a source has changed.
To signal that the timeline for all resources (uris) has changed, do not pass any argument or pass undefined.
Provide timeline items for a Uri.
The uri of the file to provide the timeline for.
A set of options to determine how results should be returned.
A cancellation token.
The timeline result or a thenable that resolves to such. The lack of a result
can be signaled by returning undefined, null, or an empty array.
An identifier of the source of the timeline items. This can be used to filter sources.