{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"data.params.iter().map(|&type_ref|"}]}
                data.params.iter().map(|&type_ref| ctx.lower_ty(type_ref)).collect::<Vec<_>>()
                ctx.type_param_mode(ParamLoweringMode::Placeholder);
            },