src/vs/editor/contrib/gotoSymbol/peek/referencesTree.ts/StringRepresentationProvider/getKeyboardNavigationLabel
class StringRepresentationProvider:	getKeyboardNavigationLabel(element: TreeElement): { toString(): string; } {
		if (element instanceof OneReference) {
			const parts = element.parent.getPreview(element)?.preview(element.range);
			if (parts) {
				return parts.value;
			}
		}
		// FileReferences or unresolved OneReference
		return basename(element.uri);
	}