src/vs/base/browser/ui/tree/abstractTree.ts/AbstractTree/updateOptions
class AbstractTree:	updateOptions(optionsUpdate: IAbstractTreeOptionsUpdate = {}): void {
		this._options = { ...this._options, ...optionsUpdate };

		for (const renderer of this.renderers) {
			renderer.updateOptions(optionsUpdate);
		}

		this.view.updateOptions({
			...this._options,
			enableKeyboardNavigation: this._options.simpleKeyboardNavigation,
		});

		this.typeFilterController?.updateOptions(this._options);

		this._onDidUpdateOptions.fire(this._options);

		this.getHTMLElement().classList.toggle('always', this._options.renderIndentGuides === RenderIndentGuides.Always);
	}