{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"AngleBracketedArg::Constraint(c)"}]}
                AngleBracketedArg::Constraint(c) => {
            self.arena.alloc_from_iter(data.args.iter().filter_map(|arg| match arg {
                    Some(self.lower_assoc_item_constraint(c, itctx))