{"ast_node_type":"variable","tokens":[{"end":100,"kind":"keyword","start":0,"text":"let"}]}
        let callee_index = callee_generics.param_def_id_to_index(tcx, caller_param.def_id).unwrap();
    for caller_param in &caller_generics.own_params {
        remap_table.insert(callee_index, caller_param.index);