{"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"symbol:"}]}
    symbol: ExportedSymbol<'tcx>,
    tcx: TyCtxt<'tcx>,
) -> (CanonAbi, &'tcx [rustc_target::callconv::ArgAbi<'tcx, Ty<'tcx>>]) {