{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"self.iter().filter_map(move"}]}
        self.iter().filter_map(move |(k, v)| f(k, v)).collect()
    fn filter_map_collect<T>(&self, mut f: impl FnMut(&K, &V) -> Option<T>) -> Vec<T> {
    }