{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"self.iter_parent().chain(self.iter_self())"}]}
        self.iter_parent().chain(self.iter_self())
    ) -> impl DoubleEndedIterator<Item = (GenericParamId, GenericParamDataRef<'_>)> + '_ {
    }