{"ast_node_type":"impl","tokens":[{"end":64,"kind":"keyword","start":0,"text":"if"}]}
            if in_trait_or_impl == Some(hir::RpitContext::Trait)
        | hir::OpaqueTyOrigin::AsyncFn { parent: owner, in_trait_or_impl } => {
                && !tcx.defaultness(owner).has_value()