syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"ensure_sufficient_stack(||"}]}
source_snippet:         ensure_sufficient_stack(|| {
context_before:     fn visit_expr(&mut self, expr: &'a Expr<'tcx>) {
context_after:             if let ExprKind::Become { value } = expr.kind {