{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"self.opaque_types.iter().map(|(k,"}]}
        self.opaque_types.iter().map(|(k, v)| (*k, *v))
    ) -> impl Iterator<Item = (OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)> {
    }