src/vs/workbench/api/common/extHostNotebookDocument.ts/RawContentChangeEvent/asApiEvents
class RawContentChangeEvent:	static asApiEvents(events: RawContentChangeEvent[]): readonly vscode.NotebookCellsChangeData[] {
		return events.map(event => {
			return {
				start: event.start,
				deletedCount: event.deletedCount,
				deletedItems: event.deletedItems,
				items: event.items.map(data => data.apiCell)
			};
		});
	}