src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts/NotebookEditorWidget/cancelNotebookCells
class NotebookEditorWidget:	async cancelNotebookCells(cells?: Iterable<ICellViewModel>): Promise<void> {
		if (!this.hasModel()) {
			return;
		}
		if (!cells) {
			cells = this.viewModel.viewCells;
		}
		return this._kernelManger.cancelNotebookCells(this.textModel, cells);
	}