{"ast_node_type":"function","tokens":[{"end":67,"kind":"keyword","start":0,"text":"fn"}]}
    fn from_iter<T: IntoIterator<Item = (K, V)>>(iter: T) -> Self {
impl<K: Ord, V> FromIterator<(K, V)> for SortedMap<K, V> {
        let mut data: Vec<(K, V)> = iter.into_iter().collect();