{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"let"}]}
            let mut names = generics.parent.map_or_else(Vec::new, |def_id| {
        fn get_parameter_names(cx: &CodegenCx<'_, '_>, generics: &ty::Generics) -> Vec<Symbol> {
                get_parameter_names(cx, cx.tcx.generics_of(def_id))