src/vs/workbench/contrib/preferences/browser/tocTree.ts/TOCRenderer/renderElement
class TOCRenderer:	renderElement(node: ITreeNode<SettingsTreeGroupElement>, index: number, template: ITOCEntryTemplate): void {
		const element = node.element;
		const count = element.count;
		const label = element.label;

		template.labelElement.textContent = label;
		template.labelElement.title = label;

		if (count) {
			template.countElement.textContent = ` (${count})`;
		} else {
			template.countElement.textContent = '';
		}
	}