src/vs/workbench/contrib/callHierarchy/browser/callHierarchyTree.ts/CallRenderer/renderElement
class CallRenderer:	renderElement(node: ITreeNode<Call, FuzzyScore>, _index: number, template: CallRenderingTemplate): void {
		const { element, filterData } = node;
		const deprecated = element.item.tags?.includes(SymbolTag.Deprecated);
		template.icon.classList.add('inline', ...CSSIcon.asClassNameArray(SymbolKinds.toIcon(element.item.kind)));
		template.label.setLabel(
			element.item.name,
			element.item.detail,
			{ labelEscapeNewLines: true, matches: createMatches(filterData), strikethrough: deprecated }
		);
	}