src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts/CodeCell/_collapseOutput
class CodeCell:	private _collapseOutput() {
		this.templateData.container.classList.toggle('output-collapsed', true);
		DOM.show(this.templateData.cellOutputCollapsedContainer);
		this._updateOutputInnerContainer(true);
		this._outputContainerRenderer.viewUpdateHideOuputs();
	}