{"ast_node_type":"variable","tokens":[{"end":72,"kind":"keyword","start":0,"text":"let"}]}
        let ty = cx.ty_new_uint(uint_ty.internal(&mut *tables, cx.tcx));
        let cx = &*self.cx.borrow();
        cx.try_new_ty_const_uint(value, ty).map(|cnst| cnst.stable(&mut *tables, cx))