src/vs/workbench/contrib/notebook/browser/viewModel/baseCellViewModel.ts/BaseCellViewModel/deltaCellStatusBarItems
class BaseCellViewModel:	deltaCellStatusBarItems(oldItems: string[], newItems: INotebookCellStatusBarItem[]): string[] {
		oldItems.forEach(id => {
			const item = this._cellStatusBarItems.get(id);
			if (item) {
				this._cellStatusBarItems.delete(id);
			}
		});

		const newIds = newItems.map(item => {
			const id = ++this._lastStatusBarId;
			const itemId = `_cell_${this.id};${id}`;
			this._cellStatusBarItems.set(itemId, item);
			return itemId;
		});

		this._onDidChangeCellStatusBarItems.fire();

		return newIds;
	}