{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"extra_args.iter().map(|op_arg|"}]}
        extra_args.iter().map(|op_arg| fx.monomorphize(op_arg.node.ty(fx.mir, fx.tcx))),
    let extra_args = fx.tcx.mk_type_list_from_iter(
    );