src/main/java/me/codeboy/common/base/time/CBTimer.java
public long pop(String key, long time) {
        if (!times.containsKey(key)) {
            return -1L;
        }
        long recordTime = times.get(key);
        times.remove(key);
        return time - recordTime;
    }
public long pop(String key, long time) {
        if (!times.containsKey(key)) {
            return -1L;
        }
        long recordTime = times.get(key);
        times.remove(key);
        return time - recordTime;
    }
获取最后一个push key到指定时间之间的时间间隔
<p>
与{@link CBTimer#push(String)}对应
</p>

@param key  key
@param time 时间
@return 时间间隔