{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
                    let ctor_res = self.res(ctor_def_id);
                    let ctor_def_id = feed.key();
                    self.r.define_local(parent, ident, ValueNS, ctor_res, ctor_vis, sp, expansion);