16     map: HashMap<u32, Arc<dyn Any + Send + Sync>>,  field
24             map: HashMap::new(),  in new()
31         self.0.write().unwrap().map.insert(key, a);  in insert_at()
39         if inner.map.len() == u32::MAX as usize {  in push()
45             if inner.map.contains_key(&key) {  in push()
48             inner.map.insert(key, a);  in push()
55         self.0.read().unwrap().map.contains_key(&key)  in contains_key()
61         if let Some(r) = self.0.read().unwrap().map.get(&key) {  in is()
71         if let Some(r) = self.0.read().unwrap().map.get(&key).cloned() {  in get()
82         let entry = match self.0.get_mut().unwrap().map.get_mut(&key) {  in get_mut()
101             .map  in delete()
103             .map(|r| r.downcast::<T>().unwrap())  in delete()
109         let map = &mut self.0.write().unwrap().map;  in renumber()  localVariable
110         let from_entry = map.remove(&from).ok_or(Error::badf())?;  in renumber()
111         map.insert(to, from_entry);  in renumber()