public void addListener(HSSFListener lsnr, short sid) {List<HSSFListener> list = _records.computeIfAbsent(Short.valueOf(sid), k -> new ArrayList<>(1));list.add(lsnr);}

public void AddListener(IHSSFListener lsnr, short sid){IList list = null;Object obj = records[sid];if (obj != null){list = (IList)obj;}else{list = new ArrayList(1);   list.Add(lsnr);records[sid]=list;}}
