{"ast_node_type":"variable","tokens":[{"end":88,"kind":"keyword","start":0,"text":"let"}]}
            let parent = self.tcx.parent_hir_node(self.tcx.parent_hir_id(block.hir_id));
            // check that the body's parent is an fn
            if let (Some(expr), hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn { .. }, .. })) =