{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"caller_fn_abi:"}]}
        caller_fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
        body: &'tcx mir::Body<'tcx>,
        args: &[FnArg<'tcx, M::Provenance>],