{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":".map(|return_type|"}]}
        .map(|return_type| CompletionRelevanceFn {
        .map(|self_type| compute_return_type_match(db, &ctx, self_type, &ret_type))
            has_params: has_self_param || func.num_params(db) > 0,