{"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"}"}]}
        } else if let ExprKind::Call(path, [arg]) = e.kind
        // ptr::from_ref(<expr>), UnsafeCell::raw_get(<expr>) or mem::transmute<_, _>(<expr>)
            && let ExprKind::Path(ref qpath) = path.kind