src/vs/workbench/contrib/debug/browser/callStackView.ts/expandTo
async function expandTo(session: IDebugSession, tree: WorkbenchCompressibleAsyncDataTree<IDebugModel, CallStackItem, FuzzyScore>): Promise<void> {
	if (session.parentSession) {
		await expandTo(session.parentSession, tree);
	}
	await tree.expand(session);
}