{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"iter.into_iter().for_each(move"}]}
        iter.into_iter().for_each(move |(k, v)| {
    fn extend<I: IntoIterator<Item = (Idx<V>, T)>>(&mut self, iter: I) {
            self.insert(k, v);