{"ast_node_type":"function","tokens":[{"end":37,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn shrink_to_fit(&mut self) {
    /// Shrinks the capacity of the map as much as possible.
        let min_len = self.v.iter().rposition(|slot| slot.is_some()).map_or(0, |i| i + 1);