{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":".lower_ty(ty,"}]}
                            .lower_ty(ty, ImplTraitContext::Disallowed(ImplTraitPosition::ConstTy));
                        let ty = this
                        let body = this.lower_const_body(i.span, expr.as_deref());