{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"AngleBracketedArg::Arg(arg)"}]}
                AngleBracketedArg::Arg(arg) => Some(self.lower_generic_arg(arg, itctx)),
            .filter_map(|arg| match arg {
                AngleBracketedArg::Constraint(_) => None,