src/vs/workbench/contrib/notebook/browser/view/cellParts/cellContextKeys.ts/CellContextKeyManager/updateForOutputs
class CellContextKeyManager:	private updateForOutputs() {
		if (this.element instanceof CodeCellViewModel) {
			this.cellHasOutputs.set(this.element.outputsViewModels.length > 0);
		} else {
			this.cellHasOutputs.set(false);
		}
	}