{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"self.extend(iter.into_iter().map(|(k,"}]}
        self.extend(iter.into_iter().map(|(k, v)| (*k, *v)))
    fn extend<T: IntoIterator<Item = (&'a K, &'a V)>>(&mut self, iter: T) {
    }