{"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"ty::FnPtr(..)"}]}
        ty::FnPtr(..) => {
    let callee_abi = match *callee.kind() {
            tcx.fn_abi_of_fn_ptr(typing_env.as_query_input((callee.fn_sig(tcx), ty::List::empty())))