{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":".expect(\"this"}]}
                                        .expect("this node should have an ast id");
                                    ErasedFileAstId::ast_id_for(&node, &mut index_map, parent)
                                let idx = res.arena.alloc((SyntaxNodePtr::new(&node), ast_id));