{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"&tcx.generics_of(def_id.to_def_id()).own_params"}]}
                &tcx.generics_of(def_id.to_def_id()).own_params
                tcx,
                    [tcx.generics_of(fn_def_id).own_params.len()..],