{"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"if"}]}
                if let Res::Local(_var_hir_id) = path.res {
                debug!("expr {}: path that leads to {:?}", expr.hir_id, path.res);
                    self.add_live_node_for_node(expr.hir_id, ExprNode(expr.span, expr.hir_id));