{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"self.impl_self_is_guaranteed_unsized(impl_def_id)"}]}
        self.impl_self_is_guaranteed_unsized(impl_def_id)
    fn impl_self_is_guaranteed_unsized(self, impl_def_id: DefId) -> bool {
    }