{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"self.add_definition_to_binding(iter_binding,"}]}
        self.add_definition_to_binding(iter_binding, iter_pat);
        let iter_pat = self.alloc_pat_desugared(Pat::Bind { id: iter_binding, subpat: None });
        self.alloc_expr(